Blu-Tack

Blu-Tack noun: a solid putty-like adhesive, originally blue in colour, used to secure items to walls and other surfaces.

Image: Fourohfour, Public domain, via Wikimedia Commons

Noun

Blu-Tack (uncountable)

(Australia, New Zealand, UK) A solid putty-like adhesive, originally blue in colour, used to secure items to walls and other surfaces.
- It was an April Fool hoax, of course. 31200 had been rigged up with a single lightweight wooden [name] plate (loosely held on by Blu Tack).2024 January 10, Chris Gilson, “RAIL's famous five...”, in RAIL, number 1000, page 27

Blu-Tack (third-person singular simple present Blu-Tacks, present participle Blu-Tacking, simple past and past participle Blu-Tacked)

(Australia, New Zealand, UK) To fix with Blu-Tack.
- The power switch wasn't seated properly, and so I blu-tacked it into place.

third-person singular present	Blu-Tacks
present participle	Blu-Tacking
past participle	Blu-Tacked
past	Blu-Tacked

From a brand name, from blue tack.

What does Blu-Tack mean?: Blu-Tack means a solid putty-like adhesive, originally blue in colour, used to secure items to walls and other surfaces.
What part of speech is Blu-Tack?: Blu-Tack can be a noun or a verb.

Adapted from Wiktionary: Blu-Tack (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated: 2026-09-02

Pronunciation audio from Wikimedia Commons, each file under its own free license: EN-AU ck1 Blu-Tack.ogg.

Cite this entry: “Blu-Tack.” Word.ws, https://word.ws/blu-tack. Based on Wiktionary, CC BY-SA 4.0.