I. U 1 BrE AmE , u /juː/ ( plural U’s, u’s ) noun
1 . [uncountable and countable] the 21st letter of the English alphabet
2 . [singular, uncountable] British English used to describe a film that has been officially approved as suitable for people of any age ⇨ PG SYN G American English
3 . [countable] British English a mark given to a student’s work to show that it is extremely bad
⇨ ↑ U-boat , ↑ U-turn
II. U 2 BrE AmE pronoun written informal
a way of writing ‘you’, used especially in emails and ↑ text message s :
I love U!