1
to let (someone) swim;to make (someone) swim;to release (fish) into the water;to set (fish) swimming
See also:
泳がせる (およがせる)
2
to make (someone) stumble forward;to make stagger;to make lurch
3
to let (a suspect) roam freely (while monitoring them);to leave at large
4
to move about in the air (e.g. one's arms);to wave about