1 using the left hand by preference as more serviceable than the right.
2 (of a tool etc.) made to be used with the left hand.
3 (of a blow) struck with the left hand.
4 a turning to the left; towards the left. b (of a racecourse) turning anticlockwise. c (of a screw) advanced by turning to the left (anticlockwise).
5 awkward, clumsy.
6 a (of a compliment) ambiguous. b of doubtful sincerity or validity.
7 (of a marriage) morganatic (from a German custom by which the bridegroom gave the bride his left hand in such marriages).
Derivatives:
left-handedly adv. left-handedness n.
Useful english dictionary. 2012.