"sinistral" in the adjective sense
1. sinistral
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"
2. sinistral
preferring to use left foot or hand or eye
"sinistral individuals exhibit dominance of the left hand and eye"
Source: WordNet® (An amazing lexical database of English)
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