join or blend to form a single entity

intermarriage had fused the families into a large unit

(of an electrical appliance) stop working when a fuse melts

the crew were left in darkness after the lights fused

provide (a circuit or electrical appliance) with a fuse

there is no need to fuse the circuit any higher unless there is other equipment on the same circuit

fit a fuse to (a bomb, shell, or mine)

the bomb was fused to go off during a charity performance