fillet

n. [ OE. filet, felet, fr. OF. filet thread, fillet of meat, dim. of fil a thread, fr. L. filum. See Fille a row. ] 1. A little band, especially one intended to encircle the hair of the head. [ 1913 Webster ]

A belt her waist, a fillet binds her hair. Pope. [ 1913 Webster ]

2. (Cooking) A piece of lean meat without bone; sometimes, a long strip rolled together and tied. [ 1913 Webster ]

☞ 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. [ 1913 Webster ]

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. [ 1913 Webster ]

4. (Mach.) A concave filling in of a reëntrant angle where two surfaces meet, forming a rounded corner. [ 1913 Webster ]

5. (Arch.) 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. [ 1913 Webster ]

6. (Her.) An ordinary equaling in breadth one fourth of the chief, to the lowest portion of which it corresponds in position. [ 1913 Webster ]

7. (Mech.) The thread of a screw. [ 1913 Webster ]

8. A border of broad or narrow lines of color or gilt. [ 1913 Webster ]

9. The raised molding about the muzzle of a gun. [ 1913 Webster ]

10. Any scantling smaller than a batten. [ 1913 Webster ]

11. (Anat.) A fascia; a band of fibers; applied esp. to certain bands of white matter in the brain. [ 1913 Webster ]

12. (Man.) The loins of a horse, beginning at the place where the hinder part of the saddle rests. [ 1913 Webster ]

Arris fillet. See under Arris. [ 1913 Webster ]