fuse(redirected from lighting the fuse)
Also found in: Dictionary, Thesaurus, Legal, Idioms, Encyclopedia.
fuseverb To join or melt one substance into another.
fuse(fūz) [L. fusus, poured]
1. A safety device consisting of a strip of wire made from easily meltable metal of predetermined conductance. The metal melts, breaking the circuit when excess current passes through.
2. To unite or blend together, as the coherence of adjacent body structures.