Note: A fillet of beef is the under side of the sirlom; also called tenderloin. A fillet of veal or mutton is the fleshy part of the thigh. A fillet of fish is a slice of flat fish without bone. "Fillet of a fenny snake." Shak.
3. A thin strip or ribbon; esp.: (a) A strip of metal from which coins are punched. (b) A strip of card clothing. (c) A thin projecting band or strip.
4. (Mach.)
Defn: A concave filling in of a reëntrant angle where two surfaces meet, forming a rounded corner.
5. (Arch.)
Defn: A narrow flat member; especially, a flat molding separating other moldings; a reglet; also, the space between two flutings in a shaft. See Illust. of Base, and Column.
6. (Her.)
Defn: An ordinary equaling in breadth one fourth of the chief, to the lowest portion of which it corresponds in position.
7. (Mech.)
Defn: The thread of a screw.