〘noun〙① A flexible, string-like projection that lines the mouth and front end of the body of many invertebrates. Equipped with tactile and chemical sensory receptors, it functions as a sense of touch and for predation. In jellyfish and sea anemones, the nematocysts are submerged. *Salamander (1929) by Ibuse Masuji: "A small shrimp clung to the rock wall (omitted). It waved its long, thin tentacles, which disappeared as if unable to see the end." ② A hand that is reaching out to something else. *Winter Day (1927) by Kajii Motojiro: "The tentacles, pale as bean sprouts and heliotropic , unwittingly stretched out towards the grey wooden house and stroked the mysterious traces of shadow that had seeped into it." Source: The Selected Edition of the Japanese Language Dictionary About the Selected Edition of the Japanese Language Dictionary Information |
〘名〙① 多くの無脊椎動物の口の周囲や体の前端に並ぶ伸縮自在のひも状突起。触覚や化学感覚の受容器を備え、触覚や捕食の働きをするもの。クラゲやイソギンチャクでは刺胞を内没させている。※山椒魚(1929)〈井伏鱒二〉「一ぴきの小蝦が〈略〉岩壁にすがりついた。さうして細長いその終りを見届けることができないやうに消えてゐる触手をふり動かしてゐたが」② 他に働きかけようとする手。※冬の日(1927)〈梶井基次郎〉一「向日性を持った、もやしのやうに蒼白い堯の触手は、不知不識(しらずしらず)その灰色した木造家屋の方へ伸びて行って、其処に滲み込んだ不思議な影の痕を撫でるのであった」
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