Cultrate

a. Nat. Hist. [ad. L. cultrātus, f. culter, cultr- knife, share: see -ATE².] Formed like a knife or coulter; having a sharp edge like a knife.

1856–8.  W. Clark, Van der Hoeven’s Zool., I. 387. Borer almost always occult, included in a bivalve sheath, compressed, cultrate. Ibid., II. 378. Bill moderate, cultrate and compresed.