ˈfunction word BrE AmE noun [countable]
a word that does not mean anything on its own, but shows the relationship between other words in a sentence, for example words such as ‘but’ or ‘if’
ˈfunction word BrE AmE noun [countable]
a word that does not mean anything on its own, but shows the relationship between other words in a sentence, for example words such as ‘but’ or ‘if’
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012