Collins COBUILD Advanced Learner's English Dictionary - k k

(K’s, k’s) 1. K is the eleventh letter of the English alphabet. N-VAR 2. K or k is used as an abbreviation for words beginning with k, such as ‘kilometre’, ‘kilobyte’, or ‘king’. 3. K or k is sometimes used to represent the number 1000, especially when referring to sums of money. (INFORMAL) I used to make over 40k. NUM: usu num NUM