Resembling or having the quality of a bowstring; stretched tight, taut, or under tension like the string of an archer's bow.
From 'bowstring' (the string of a bow) plus the past participle suffix '-ed,' used as an adjective to mean 'having the qualities of a bowstring'.
In literature, 'bowstringed' is a poetic descriptor for anything tight and tense—muscles can be bowstringed with tension, or emotions can be bowstringed with anxiety, using an ancient weapon's mechanics as a metaphor for human stress.
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