Sinistral

(adj.) of or on the left; 'a sinistral gastropod shell with the apex upward has its opening on the left when facing the observer'; 'a sinistral flatfish lies with the left eye uppermost' .

(adj.) preferring to use left foot or hand or eye; 'sinistral individuals exhibit dominance of the left hand and eye' .

手打:柯尔斯顿