Pronunciation: (bak'stā"),[key] —n. 1. Mach.a supporting or checking piece in a mechanism.
2. Building Trades.an anchored tension member, as a cable, permanently or temporarily supporting a compression member, as a tower or pole, subject to a pull above its base from the opposite direction.
3. a strip of leather at the back of a shoe used for reinforcement and sometimes to connect the quarters.
Pronunciation: (bak'stā"),[key] —n. Naut.any of various shrouds forming part of a vessel's standing rigging and leading aft from masts above a lower mast to the sides or stern of the vessel in order to reinforce the masts against forward pull.