Archive Replay Monday, February 3, 2025

Sign of the Day

tongued and grooved timber

This sign visually represents how tongued and grooved boards interlock. The dominant G-hand acts as the 'tongue,' sliding into the non-dominant C-hand, which represents the 'groove.' This iconic sign clearly depicts the specific joinery method

B1 Uncommon Noun British Sign Language (BSL) Technical
Watch Today’s Sign Practise in Smart Practice Open Full Sign Page
Yesterday Back to Today
Daily focus

Today’s meaning

A type of wooden board designed with an interlocking profile (a tongue and a groove) along its edges

Source
Today’s Snapshot

The meta fields are doing real work here

This page turns your sign metadata into a fast, readable fingerprint of how the sign looks, feels, and fits into real conversation.

Level B1
Frequency Uncommon
Class Noun
Hand count Two-handed
Movement Linear, Repeated
Location Neutral space, in front of the body
Face & eyes None
Language British Sign Language (BSL) · UK
Shape cue

Dominant G-hand, non-dominant C-hand

Motion cue

Dominant G-finger slots into non-dominant C-hand and slides along

Meaning cue

Used in construction, carpentry, and DIY contexts

Break It Down

Watch, build, and feel the movement

Use the numbered steps first, then check the sign anatomy cards to clean up the small details that make the sign look fluent instead of approximate.

How to form the sign

  1. Form G-hand with dominant hand, index finger extended
  2. Form C-hand with non-dominant hand, open upwards/inwards
  3. Slot dominant G-finger into non-dominant C-hand
  4. Slide dominant G-finger along the non-dominant C-hand
Coach prompt

Practice forming the G and C handshapes accurately. Focus on the smooth, linear sliding motion. Ensure hands are in the neutral space

Signature details

Handshape Dominant G-hand, non-dominant C-hand · Code DH G, ND C
Dominant hand Either
Symmetry Asymmetric
Contact Touch
Palm orientation Dominant: Forward/Down, Non-dominant: Upward/Inward
Eyebrows Neutral
Eye gaze Forward
Head movement None
Mouth morpheme None
Body shift None
Use It Today

Move from recognition to real-life use

Everything below is designed to make the sign sticky: where it feels natural, what learners miss, and how to use it without sounding robotic.

Natural example
We need to buy tongued and grooved timber for the new floor

Visually demonstrates the interlocking mechanism of the boards

Best fit: Used in construction, carpentry, and DIY contexts

Daily drills
Mirror focus

Practice forming the G and C handshapes accurately. Focus on the smooth, linear sliding motion. Ensure hands are in the neutral space

Catch the slip

Ensure the dominant index finger fully slots into the non-dominant C-hand. The movement should be a clear slide, not just a touch or tap

Use it today

We need to buy tongued and grooved timber for the new floor

Watch-outs

Common mistakes: Incorrect handshapes or not clearly sliding the finger

When not to use it: For general 'wood' or 'plank'; this sign is very specific

Regional note: No significant variation recorded for this technical sign

Cultural note: Iconic representation aids understanding of specific carpentry terms

Practice line

1.[en] We need tongued and grooved timber. / BSL: WE NEED TONGUED-GROOVED TIMBER.

Practice line

2.[en] He installed the floorboards. / BSL: HE INSTALL FLOOR-BOARDS (using this sign).

Practice line

3.[en] This joinery is strong. / BSL: THIS JOINERY STRONG (referencing the interlocking)

Connect the Dots

Turn one sign into a small learning cluster

These links use your relationship fields, related vocabulary, and category context so the daily page becomes a launchpad instead of a dead end.

Word web

T&G interlocking timber floorboard cladding N/A Wood carpentry construction joinery Wood Plank Carpentry Floorboard Joinery

WOOD/TIMBER (general): Typically involves tapping the knuckles of one hand against the palm of the other or rubbing hands together. This is a generic term. PLANK/BOARD: Uses a flat hand (B-hand) to show the length and width of a flat piece of wood. It indicates a single, flat item. TONGUED AND GROOVED TIMBER: Specifically shows the interlocking mechanism of two pieces of wood, making it distinct from general wood or a single plank

Building materials woodworking DIY Tongued grooved timber wood board carpentry construction BSL building
wood BSL sign A1
wood

Material from trees
plank BSL sign A1
plank

A long, flat piece of wood
carpentry BSL sign B1
carpentry

The skill or work of building, repairing, or making things from wood
thirst BSL sign A1
thirst

Feeling a need or desire to drink
lesson BSL sign A1
lesson

A period of instruction or learning
volleyball BSL sign A2
volleyball

A team sport where players hit a ball over a net with their hands
Come Back Tomorrow

Build a rhythm around one sign a day

The archive rail lets people revisit recent daily picks, while the teaser card gives a reason to return instead of drifting away after one lesson.

Today tongued and grooved timber B1 Sun roofing sheet B1 Sat spanner A2 Fri cooling coil B2 Thu footway B1 Wed trench B1 Tue wall A1
Want more than one sign today?

Keep the daily ritual, then go deeper.

Use the daily page as your anchor, then branch into the dictionary, practice mode, or your saved review list when you want more reps.

Browse the Dictionary Practise This Sign See Membership Plans

Video credit: The demonstration video on this page is credited to SpreadTheSign. The video remains the property of the original rightholder.

All written explanations, learning notes, examples, comparisons, and page design on this page are SignDeaf educational material.

🤟 Ready to start?

Learn British Sign Language.
Join the Deaf community.

500+ signs · Level system · Real BSL videos · Completely free to begin

Start Learning Free Join Discord
Deaf-first design No credit card needed 10,000+ learners
Join Discord