O′ver‐head″ (?), adv. Aloft; above; in or attached to the ceiling or roof; in the story or upon the floor above; in the zenith.
While overhead the moon
Sits arbitress. Milton.
Also used adjectively; as, an overhead crane, gear, etc.
Overhead engine, a vertical steam engine in which the cylinder stands above the crank. — Overhead work, a general term in manufactories for countershafting and gearing, when overhead.