Noun

1. A magnifying glass, usually mounted in an eyepiece, often used by jewellers and watchmakers.
   • 2006, Thomas Pynchon, Against the Day, Vintage 2007, p. 264:

     pale gnomes, patient as lock-pickers, squinted through loupes, adjusting tremblers and timers with tiny screwdrivers and forceps.

2. A type of short-range binoculars used by surgeons and dentists.

Noun

1. magnifying glass
2. loupe
3. wen (a cyst on the skin)
4. burl, a growth on the side of a tree
5. (old) laziness (from louper) synonym: flemme