Wiktionary
(context figuratively uncommon English) nervous, tense, jumpy. v
(en-past of: overwind)
WordNet
See overwind
Usage examples of "overwound".
Wound up, in a few cases, until they were like clocks that had been overwound, and had to be released from their tension by medical intervention.
Everyone from Ardiff on down had his own opinion on whether or not it was true, none of them could prove their opinion to anyone else, and the entire ship was about as tense as an overwound throwbow.
Her whole body felt aching and heavy and as tight as an overwound clock spring.
Once inside the bedroom, she collapsed into a chair, her heart pitter-pattering like an overwound toy.
He needed to be up, moving about to release the tension coiled like an overwound spring in his chest.
He did not notice Reynolds doubling and tripling his efforts, clawing, thrashing, slashing and pounding at Saul like some maddened, overwound clockwork toy.
No, Lily realized, she was tight all over, as if she were made of overwound springs ready to snap.