Inclination; talent for something. Out of my bent, not in my way, not in the range of my talent. Bent on it, inclined to it. As a thing bent is inclined, so a bent is an inclination or bias. Genius or talent is a bent or bias.
“Whatever is done best, is done from the natural bent and disposition of the mind.”—Hazlitt: Table Talk.
They fool me to the top of my bent, i.e. as far as the bow can be bent without snapping. (Hamlet, iii. 2.) (See Bend.)
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894