- (Roget's IV)
modif. & prep.
1. [The indefinite article; before vowels, written ""an'' ]Syn. some, one, any, each, some kind of, some particular, any of, any one of, a certain.Ant. the*, this, that.2. [An indication of frequency]Syn. per, in a, on a, each, every, to the, by the, at the rate of.
English dictionary for students. 2013.