noun
set net; fish trap
A stationary fishing net fixed in place with poles or anchors, used to catch fish that swim into it.
この湾では建網漁が盛んだ。
Set net fishing is thriving in this bay.
建網にかかった魚を朝早く引き上げる。
They haul in the fish caught in the set net early in the morning.
Compound of 建て (tate, 'standing, setting up') + 網 (ami, 'net'). The kanji 建 conveys the idea of erecting or fixing the net in place.