Nat. Hist. [ad. L. sulcātus, pa. pple. of sulcāre (see next).] Marked with (parallel) furrows or grooves.
1760. J. Lee, Introd. Bot., II. xxxiii. (1765), 160. Cucurbita, with a sulcate Fruit.
1828. Stark, Elem. Nat. Hist., II. 15. Shell thin, hyaline, transversely sulcate.
1872. Coues, N. Amer. Birds, 187. The bill is more or less depressed with smooth, rounded or sulcate, culmen.