耳返 ěrfǎn in-ear monitor Origin Definitions Defs Strokes Stroke Words Sentences Sents 耳 ěr noun ear (bound form) ear; the organ of hearing返 fǎn abbreviation of 耳机返听系统 耳機返聽系統 ěrjīfǎntīngxìtǒng in-ear monitoring system system used by performers and presenters to hear a mix of audio sources through headphones or earpieces