The term 'CHERRY BOMB'S STEM' can be solved by the four-letter word 'FUSE'. A FUSE is a device used to protect electrical circuits from overloads. It consists of a length of wire or other material that melts when too much current passes through it, thus breaking the circuit and preventing further damage. Fuses are commonly used in fireworks, such as CHERRY bombs, to ensure that the explosive does not detonate until the FUSE is lit.