swimming kick

nouns

a movement of the legs in swimming
swimming kick
is a part of
a method of moving the arms and legs to push against the water and propel the swimmer forward
swimming stroke
is a type of (narrower)
a rhythmic thrusting movement of the legs as in swimming or calisthenics
"the kick must be synchronized with the arm movements"; "the swimmer's kicking left a wake behind him"
kick, kicking