M BrE AmE , m /em/ ( plural M’s , m’s ) noun
1 . [uncountable and countable] the 13th letter of the English alphabet
2 . [countable] the number 1,000 in the system of ↑ roman numeral s
3 . M6, M25 etc the name of a ↑ motorway in Britain
M BrE AmE , m /em/ ( plural M’s , m’s ) noun
1 . [uncountable and countable] the 13th letter of the English alphabet
2 . [countable] the number 1,000 in the system of ↑ roman numeral s
3 . M6, M25 etc the name of a ↑ motorway in Britain
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012