Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

Dictionary Suite
u the twenty-first letter of the English alphabet. [4 definitions]
U symbol of the chemical element uranium.
U.S. abbreviation of "United States," a North American country extending from the Atlantic to the Pacific between Canada and Mexico and including Alaska and Hawaii; United States of America (prec. by, "the").
us the objective case of we, used as a direct or indirect object of a verb or as an object of a preposition. [2 definitions]
we used in reference to the speaker and one or more others. [4 definitions]