A sports contest where the members of a team take turns e.g. swimming, running or skiing parts of a circuit.

plural of relay race

plural of spam relay

In a variable-expansion central-valve steam engine, a small auxiliary engine for automatically adjusting the steam distribution to the load on the main engine.

plural of mail relay

plural of relay cylinder

A relay consisting of a reed switch and an electromagnet to operate the switch

(chiefly India) A type of strike where workers in a particular sector strike sequentially per business.

(uncountable) A sport developed by the Prairie Amerinds / Great Plains Indians, where competitors race thrice around a horsetrack bareback on horses, where the racer must jump off one horse and onto another at the end of each lap.

plural of relay strike