hand_glass
1. [ noun ] (physics) a mirror intended to be held in the hand
Synonyms: hand_mirror
Related terms: mirror
2. [ noun ] (optics) light microscope consisting of a single convex lens that is used to produce an enlarged image
Synonyms: magnifying_glass simple_microscope
Examples:

"the magnifying glass was invented by Roger Bacon in 1250"

Related terms: light_microscope loupe
Similar spelling:   handclasp
  hand_ax
  handclap
  hand_axe
  hand_grenade
  handwash