(n.) The 20th letter (/, /) of the Greek alphabet, a vowel having originally the sound of / as in room, becoming before the 4th century b. c. that French u or Ger. u. Its equivalent in English is u or y.
(v.) The part of a key which enters the lock and acts upon the bolt and tumblers.
(v.) In the Southern and Southwestern States, a small silver coin (as the real) formerly current; commonly, one worth about 12 1/2 cents; also, the sum of 12 1/2 cents.
(v.) The part of a bridle, usually of iron, which is inserted in the mouth of a horse, and having appendages to which the reins are fastened.