ˈsəlkəs noun
( plural sul·ci -lˌsī)
Etymology: New Latin, from Latin, furrow; akin to Greek holkos track, trace, furrow, helkein to drag, pull, Old English sulh plow, measure of land (cultivated by one plow), Armenian helg slow, sluggish, Tocharian B sälk to pull, drag forward
: furrow , groove , fissure ; especially : a shallow furrow on the surface of the brain separating adjacent convolutions