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horn; antler
antenna; feeler; tentacle (e.g. of a snail)
horn-like projection (e.g. peaks of whipped cream)
「角」 has other readings with different meanings.
あの鹿の角はとても立派だね。
That deer's antlers are really impressive.
牛には大きな角がある。
Cows have big horns.
角が折れたカブトムシを見つけた。
I found a beetle with a broken horn.