プログレッシブ和英中辞典(第4版)の解説
ぶるい【部類】
〔種族〕a class;〔範疇〕a category
これは散文詩の部類に入れるべきだ
This should be 「classed under [put in the category of] prose poetry.
彼は優等生の部類に入るだろう
He can be classed as one of the superior students.
彼の歌は民謡の部類に入る
His songs come [fall] under the head [heading] of folk music.