A cephalopod (squid or cuttlefish), commonly eaten as seafood (e.g., surumeika). Usually written in kana.
昨夜は居酒屋でイカの刺身を食べた。
Last night I ate squid sashimi at an izakaya.
イカは油で揚げると香ばしくておいしい。
Squid is tasty and fragrant when deep-fried.
市場にはいろいろな種類のイカが並んでいる。
Various kinds of squid are displayed at the market.