noun
rewinding; replacing a wound thread/wire
General noun for winding a replacement thread, wire, or similar material onto a spool, bobbin, or core. Often used in technical or craft contexts.
ミシンの下糸の巻き替えが必要だ。
I need to rewind the bobbin thread on the sewing machine.
釣り糸の巻き替えをしてから釣りに行った。
I went fishing after respooling the fishing line.
noun
changing grip from overarm to underarm (sumo)
Sumo-specific term: a technique where a wrestler changes from an overarm grip to an underarm grip on the opponent's belt (mawashi).
彼は巻き替えで相手のまわしを引きつけた。
He pulled his opponent's belt closer by switching to an underarm grip.