n. (also u) (pl. Us or U's)
1 the twenty-first letter of the alphabet.
2 a U-shaped object or curve (esp. in comb.: U-bolt).
adj. esp. Brit. colloq.
1 upper class.
2 supposedly characteristic of the upper class.
adj. a Burmese title of respect before a man's name.
abbr. (also U.)
1 Brit. universal (of films classified as suitable without restriction).
symb. Chem. the element uranium.
Useful english dictionary. 2012.