n. A lock worked on one side by a handle and on the other side by a key.n. A complete stoppage, stand-still, or entanglement; a state of affairs in which further progress or a decision is for the time impossible, as if from an inextricable locking up: as, a dead-lock in a legislature where parties are evenly balanced.n. A lock with a key-bolt, but with no latch-bolt, operated by a knob.n. A lock in which the key-bolt must be moved by turning the key in each direction: distinguished from a spring lock.To bring to a dead-lock or standstill: as, “they have dead-locked the legislature,”