Word Study
sulcus
OXFORD DICTIONARY
sulcus, n. (pl. sulci) Anat. a groove or furrow, esp. on the surface of the brain.
Etymology
L
ROGET THESAURUS
sulcus
Furrow
N furrow, groove, rut, sulcus, scratch, streak, striae, crack, score, incision, slit, chamfer, fluting, corduroy road, cradle hole, channel, gutter, trench, ditch, dike, dyke, moat, fosse, trough, kennel, ravine, tajo, thank-ye-ma'am, furrowed, ribbed, striated, sulcated, fluted, canaliculated, bisulcous, bisulcate, bisulcated, canaliferous, trisulcate, corduroy, unisulcate, costate, rimiform.For further exploring for "sulcus" in Webster Dictionary Online