Sinus
From BiblePortal Wikipedia
Sinus [1]
(1):
(n.) An opening; a hollow; a bending.
(2):
(n.) A bay of the sea; a recess in the shore.
(3):
(n.) A depression between adjoining lobes.
(4):
(pl.) of Sinus
(5):
(n.) A cavity; a depression.
(6):
(n.) A dilated vessel or canal.
(7):
(n.) A narrow, elongated cavity, in which pus is collected; an elongated abscess with only a small orifice.
(8):
(n.) A cavity in a bone or other part, either closed or with a narrow opening.