Definition of overbow:
(v) :
(transitive) To bow or bend (something) over beyond its natural trajectory; to bend in a contrary direction.
(v) :
(intransitive) To bend too far.
(v) :
(archery, transitive) To provide (an archer) with a bow that requires more strength than the archer can fully draw.
(v) :
(archery, intransitive) To use a bow that requires more strength than the archer can fully draw.
(v) :
(transitive) To overburden.
(v) :
To use too much pressure when playing a stringed instrument using a bow.