( < Harry Potter usage, also by association with "smuggle")
1. (noun)(
Geocaching) A non-geocacher, especially one from whom
geocaching activities must be concealed.
2. (verb)The vandalization of a
geocache by a muggle.
"I was unable to approach the
cache during the day because there were too many
muggles about."
"Could not find the cache, it may have been
muggled."