n. A fresh supply, especially of animals to be substituted for others; specifically, a fresh set of dogs or horses, in hunting, held in readiness to be cast off or to remount the hunters should occasion require, or a relief supply of horses held in readiness for the convenience of travelers.n. A squad of men to take a spell or turn of work at stated intervals: a shift.n. Generally, a supply of anything laid up or kept in store for relief or fresh supply from time to time.n. An instrument, consisting principally of an electromagnet with the armature delicately adjusted for a slight motion about an axis, and with contact-points so arranged that the movement of the armature in obedience to the signals transmitted over the line puts a battery, known as the local battery, into or out of a short local circuit in which is the recording or receiving apparatus. Also called relaymagnet.To lay again; lay a second time: as, to relay a pavement.n. In telegraphy, the circuit operated by a relay.To transmit by means of a telegraphic or telephonic relay; make use of a relay.