Pronunciation: (yOO),[key] —n., —pl.U's or Us, u's or us. 1. the 21st letter of the English alphabet, a vowel.
2. any spoken sound represented by the letter U or u, as in music, rule, curious, put, or jug. 3. something having the shape of a U. 4. a written or printed representation of the letter U or u. 5. a device, as a printer's type, for reproducing the letter U or u.
Pronunciation: (yOO),[key] —pronoun. Pron. Spelling. you: Shoes Fixed While U Wait.
Pronunciation: (yOO),[key] —adj.Informal. characteristic of or appropriate to the upper class, esp. of Great Britain.
Pronunciation: (OO),[key] —n. a Burmese title of respect applicable to a man: used before the proper name.
—Symbol. 1. (on a packaged product) certified as kosher by the Union of Orthodox Hebrew Congregations.
2. the 21st in order or in a series, or, when I is omitted, the 20th.
5. Thermodynam.See internal energy. 6. Brit.a designation for motion pictures determined as being acceptable for viewing by all age groups. Cf. A (def. 11), X (def. 9).