いちぐん 一群 LinksSentence search for 一群Sentence search for いちぐんKanji details for 一 and 群Edit in JMdict Noun1. group; flock; crowd; herdそらたか空高くいちぐん一群のとり鳥がと飛んでいるのをみ見た。I saw a flock of birds flying aloft.Noun2. wide expanse (of flowers) Discussions Log in to talk about this word.