KEYSTONE


Meaning of KEYSTONE in English

/kee"stohn'/ , n.

1. the wedge-shaped piece at the summit of an arch, regarded as holding the other pieces in place.

2. something on which associated things depend: the keystone of one's philosophy.

3. Also called keystone sack . Baseball Slang. See second base (def. 1).

[ 1630-40; KEY 1 + STONE ]

Syn. 2. basis, principle, foundation, linchpin.

Random House Webster's Unabridged English dictionary.      Полный английский словарь Вебстер - Random House .