What is the meaning of Fuser?

The part of a laser printer that melts the toner onto the medium.

dud; piece of fireworks that fails to explode

to melt or fuse

to gush or spurt

to ring out, sound out

bungler, botcher (a clumsy or incompetent worker)

botched, bungled

indefinite plural of fus

present tense of fuse

Source: wiktionary.org