Webster's Revised Unabridged Dictionary · 1913

Overhand

Overhand , noun

1.
The upper hand; advantage; superiority; mastery.
He had gotten thereby a great overhand on me. — Sir T. More
2.
(Baseball) A throwing or pitching style that is overhanded; also an overhand{2} pitch.

Overhand , adjective

1.
(Sewing) Over and over; -- applied to a style of sewing, or to a seam, in which two edges, usually selvages, are sewed together by passing each stitch over both.
2.
(Baseball, Cricket, Tennis, etc.) Done (as pitching or bowling) with the hand higher than the elbow, or the arm above, or higher than, the shoulder; as, an overhand pitch; an overhand stroke.
Collocations (1)
Overhand knot , See Illustration of Knot.

Overhand , adverb

In an overhand manner or style.