बायाँ हाथ
bayān hāth
'Left-hand' refers to something that is on the left side or is used with the left hand.
You pronounce 'left-hand' like this: left-hand, where 'left' rhymes with 'best' and 'hand' rhymes with 'sand'.
The word 'left' comes from Old English 'lyft', which means weak or foolish, and 'hand' comes from Old English 'hand', meaning the same as today.
The word 'left-hand' in Bengali is 'বাঁ হাত' (Bā̃ hāt).