(かえるあし)

かえるあし
noun
frog kick
sports
1. frog kick; the breaststroke leg motion
The characteristic leg movement of the breaststroke, in which the knees bend and the feet sweep outward and then together, resembling the kick of a frog.
蛙足(かえるあし)(およ)
To swim with a frog kick.
In the breaststroke you use a frog kick.
When you time the frog kick right, your body glides forward well.

Compound of (かえる) (frog) + (あし) (legs). The leg action of the breaststroke (平泳(ひらおよ)), where the feet draw up, sweep out, and snap together like a frog kicking.

Common collocations

Mainly a swimming term; the motion is also called あおり(あし).