(1):

(n.) A performer on the flute; a flautist.

(2):

(n.) To move with quick vibrations or undulations; as, a sail flutters in the wind; a fluttering fan.

(3):

(n.) To move about briskly, irregularly, or with great bustle and show, without much result.

(4):

(n.) To be in agitation; to move irregularly; to flucttuate; to be uncertainty.