[sul.cus] n, pl sul.ci [L; akin to OE sulh plow, Gk holkos furrow, helkein to pull] (1662): furrow, groove; esp: a shallow furrow on the surface of the brain separating adjacent convolutions
SULCUS
Meaning of SULCUS in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012