A pale blue adhesive substance typically used to attach paper to walls or other hard surfaces.
you needn't invest in permanent notices: slips of paper and Blu-Tack will do
Example sentencesExamples
When asked about their extra gear they consider necessary to be professional landscape photographers, two said a tripod and the third wanted Blu-Tack to keep his filters in place and a notebook and pen!
So I put some Blu-Tack and my little mini camera in my pocket and we stuck his pictures up underneath all these great big works of art.
We had posters displayed on most estates, taped or stuck up with Blu-Tack, and they stayed up.
Blu-Tack, which kept the posters from falling off my walls in college, is not just a handy tool, it's an art medium.
The Care Quality Commission stressed that it has not banned magazines from waiting rooms, or set any rules about Blu-Tack.
verbˈbluːtak
[with object]British
Attach (something) to a wall or other hard surface using Blu-Tack.
he's Blu-Tacked a large map of the British Isles to his wall
Example sentencesExamples
The daubs and scrawls of the pupils were still Blu-Tacked to the walls of the classrooms.
A Respect poster is Blu-Tacked to his shop window.
We ended up taking the pics with the prints Blu-Tacked to the windows in the back garden.
I examined the timetable Blu-Tacked to the inside of my locker door, and groaned.
Fortunately there was a technical drawing of the place I could Blu-Tack up and use to keep myself from going astray.