A species of sea snail, Pleurotomaria beyrichii. Typically used in biological or shell-collecting contexts.
The Beyrich's slit shell is a type of sea snail that lives in the deep sea.
Standard katakana spelling for this species name.
Kanji spelling is rare; the word is usually written in kana.
The name likely combines 翁 (okina, 'old man') and 恵比須 (ebisu, the god of fishermen and luck), but the exact derivation is uncertain.