Having only one hand. / Performed using only one hand. / Designed for use with one hand / (specifically, of reading or reading material) Pornographic in nature. / That uses one hand.

Using only one hand; one-handedly. / (figuratively) Very easily, without effort.

(sequence, idiomatic) From one point of view.

Alternative form of on the one hand

(idiomatic) To absolve oneself of responsibility or future blame for; to refuse to have any further involvement with.

(card games) In card playing, to accidentally reveal one's cards or hand. / (figuratively) To inadvertently reveal any secret, particularly a secret that puts one at an advantage or disadvantage.

(idiomatic) To attempt a skill, craft, trade, or action, possibly for the first time.

(idiomatic) To remain idle when action is needed, perhaps because of fear, ignorance, complacency, indecisiveness, or dislike of the person(s) or situation.

(informal, transitive) To get; to obtain; to secure. / To catch.

Used other than figuratively or idiomatically: see wash, one's, hands. / (idiomatic, euphemistic) To go to the toilet.