Decals are pieces of paper with a design on one side. The design can be transferred onto a surface by heating it, soaking it in water, or pressing it hard.
[US]regional note: in BRIT, use transfer
decal in British English
(dɪˈkæl, ˈdiːkæl)
noun
1. short for decalcomania
verb
2.
to transfer (a design) by decalcomania
decal in American English
(ˈdikæl; dɪˈkæl)
noun
a decorative picture or design printed on specially prepared paper for transferring to glass, wood, etc.