also: なげあみ
noun
cast net; casting net
A circular net with weights around the edge, thrown by hand to catch fish in shallow water.
漁師が川で投網を打つ。
The fisherman casts a cast net in the river.
投網の使い方を習った。
I learned how to use a cast net.
Alternate spelling using the more transparent 投げ; reading なげあみ is less common.
Compound of 投 (throwing) and 網 (net). The reading とあみ is a regular compound reading; なげあみ uses the native reading of 投げ.