Part of Speech: Noun
In advanced discussions, you might encounter phrases like "sulci" (plural of sulcus) or terms that describe specific types of sulci, such as "precentral sulcus" (involved in motor control) or "postcentral sulcus" (related to sensory perception).
In a broader sense, "sulcus" can also refer to grooves in other contexts, such as in anatomy of other animals or even in botany, where it might describe grooves in plant structures.
There are no common idioms or phrasal verbs that specifically include the word "sulcus" because it is a technical term. However, in a more general context, you might hear phrases like "to dig deep" (which can metaphorically relate to creating a groove or path in thought).
"Sulcus" is a specialized term mainly used in anatomy to describe narrow grooves in organs or tissues, especially the brain.