CHEEK, noun 1. The side of the face below the eyes on each side. 2. Among mechanics, cheeks are those pieces of a machine which form corresponding sides, or which are double and alike; as the cheeks of a printing press, which stand perpendicular and support the three sommers, the head, shelves and winter; the cheeks of a turners lathe; the cheeks of a glaziers vise; the cheeks of a mortar, and of a gun-carriage; the cheeks of a mast, which serve to sustain the trestle trees, etc. CHEEK by jowl, closeness, proximity.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI