Source : Webster's Revised Unabridged Dictionary (1913)

Cottise \Cot"tise\ (k[o^]t"t[i^]s), n. [Cf. F. c[ocit]t['e]
   side, L. costa rib.] (Her.)
   A diminutive of the bendlet, containing one half its area or
   one quarter the area of the bend. When a single cottise is
   used alone it is often called a {cost}. See also
   {Couple-close}.