Beard (beard, palp, mustache) - Beard (English spelling) palp

Japanese: ひげ(髭∥鬚∥髯) - ひげ（英語表記）palp

Originally, it referred to the long tufts of hair that grow on a man's face, cheeks, chin, and around the mouth (the kanji characters for 髯, 髚, and hibiscus, respectively), but by extension it has come to refer not only to similar tufts of hair in mammals and to the tentacles that grow on the upper lip, but also to similar hair-like projections, regardless of their function. For example, the fin spines in front of a fish's fins are called shiyokushuu (paleontological barbels), the horny plates in the mouths of baleen whales are called baleen, the projections on the legs of chelicerates are called pedipalps (pedipalps), and in plants, the ends of vines are called tendrils and the roots of monocotyledons are called baleen roots.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

本来は，男子の顔面部，ほお，あご，および口の周りに生ずる，長く伸びる毛の房を指す(それぞれ漢字では髯，鬚，髭をあてる)が，転じて哺乳類の同様な毛の房，および上唇などに生える触毛をいうばかりでなく，これらに似た毛状の突起物をも，機能に関係なく，ひげということが多い。例えば，魚類のひれの前にある鰭刺（きし）を触鬚（しよくしゆ），ヒゲクジラ類の口内にある角質の板をくじらひげ，鋏角類の脚にある突起物を脚鬚（きやくしゆ）pedipalpというたぐいであり，植物でも，つるの先端を巻きひげ，単子葉類の根をひげ根という。

出典　株式会社平凡社世界大百科事典第２版について　情報

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