(1):

(n.) A wavering; unsteadiness; as, fluctuations of opinion; fluctuations of prices.

(2):

(n.) The motion or undulation of a fluid collected in a natural or artifical cavity, which is felt when it is subjected to pressure or percussion.

(3):

(n.) A motion like that of waves; a moving in this and that direction; as, the fluctuations of the sea.