Blu-tack

noun, verb

noun, verb ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A solid putty-like adhesive, originally blue in colour, used to secure items to walls and other surfaces. Australia, British, New-Zealand, uncountable

    "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)."

Verb
  1. 1
    To fix with Blu-Tack. Australia, British, New-Zealand

    "The power switch wasn't seated properly, and so I blu-tacked it into place."

Example

More examples

"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)."

Etymology

From a brand name, from blue tack.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.