Ruf·fle, n.
 1. That which is ruffled; specifically, a strip of lace, cambric, or other fine cloth, plaited or gathered on one edge or in the middle, and used as a trimming; a frill.
 2. A state of being ruffled or disturbed; disturbance; agitation; commotion; as, to put the mind in a ruffle.
 3. Mil. A low, vibrating beat of a drum, not so loud as a roll; -- called also ruff.
 4. Zool. The connected series of large egg capsules, or oothecae, of any one of several species of American marine gastropods of the genus Fulgur. See Ootheca.
 Ruffle of a boot, the top turned down, and scalloped or plaited.

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