John 1:18

Strong’s #2859, kolpos, κόλπος denotes a variety of meanings centering on the concept of an enfolding or enclosing space. In its primary physical sense, it refers to the bosom of a mother or nurse (Il. 6.400, 467), or more broadly, the belly or entrails, especially in the plural (Eur. Hel. 1159; Call. Jov. 15).

It also commonly designates the fold of a garment, where items might be held (Il. 22.80; Od. 15.468). By extension, it may describe natural hollows such as the trough between sea waves, the bosom of the sea, or the interior of the earth, including references to the underworld (Il. 18.140; Opp. C. 3.11; Ar. Av. 694).

In Acts 27:39 it specifically denotes a gulf.