ˈin-word BrE AmE noun [countable]
a word that is popular at a particular time, or among a particular group of people, but that does not usually continue to be popular for long:
the latest in-word amongst teenagers
ˈin-word BrE AmE noun [countable]
a word that is popular at a particular time, or among a particular group of people, but that does not usually continue to be popular for long:
the latest in-word amongst teenagers
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012