Skilled or able to use either hand, with unspecified degrees of equalness; ambidextrous. / Denoting either right-handed or left-handed; either-handed. / For use with both hands or using both hands.

With both hands / Involving two sides or approaches

(idiomatic) Willingly; readily. / Used other than figuratively or idiomatically: see with, both, hands.

(archaic) A factotum.

(obsolete) To ready oneself for action or bravery; to gird up one's loins.

(idiomatic) To summon up one's courage in readiness for a difficult or dangerous action.

Using both hands.

Ambidexterity. / The property of involving two sides, approaches, or orientations.