Temple arm
Each arm of a glasses frame that runs from the hinge back over the ear.
Also: arm, earpiece
The temple arms hold glasses on the head. Their length, the last number printed inside, often 135 to 150 millimetres, is chosen so the bend sits just behind the ear. Straight "library" arms rest lightly; curled cable arms, once common on wire frames, wrap behind the ear and suit sport and children. The hinges may be simple barrel hinges or sprung ones that flex outward.