SULCUS Meaning of SULCUS in English [ 'sʌlkəs ]■ noun ( plural sulci -sʌɪ ) Anatomy a groove or furrow, especially one on the surface of the brain.OriginC17: from L., 'furrow, wrinkle'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004