labrumn.
英 'leɪbrəm | 美 'lebrəm
中文n. [无脊椎] 上唇
词根词源
labrum (n.)lip or lip-like part, 1816, in various anatomical and zoological uses, from Latin labrum, cognate with labium "lip" (see lip (n.)). Also noted mid-15c. as the name of some herb.
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