[wag.gle] vb wag.gled ; wag.gling [freq. of [1]wag] vt (1594): to move frequently one way and the other: wag ~ vi: to reel, sway, or move from side to side: wag -- wag.gly adj
[2]waggle n (ca. 1866) 1: an instance of waggling: a jerky motion back and forth or up and down
2: a preliminary swinging of a golf club head back and forth over the ball before the swing