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dried fish (or shellfish, etc.)
「干物」 has another reading with different meanings.
朝食に干物を焼いて食べた。
I grilled dried fish for breakfast.
干物は保存が利いて便利だ。
Dried fish keeps well and is convenient.
伊豆の干物は格別に美味い。
Dried fish from Izu is exceptionally delicious.