ＬＨＲ LinksSentence search for ＬＨＲSentence search for ロングホームルームSentence search for ロング・ホームルームEdit in JMdict Noun1. long homeroom; occasional or periodic extra long registration class or assembly in a school (e.g. for activities not related to class work)See also ホームルームOther formsＬＨＲ 【ロング・ホームルーム】 Discussions Log in to talk about this word.