What is the meaning of Gauche?

Awkward or lacking in social graces; bumbling; apt to make gaffes.

Skewed, not plane.

Having a torsion angle of 60°.

left

awkward, gawky, clumsy

the left, the left-hand side

the left (the left-wing political parties as a group; citizens holding left-wing views as a group)

ellipsis of poing gauche (“left fist”)

left

Source: wiktionary.org