jack-a-dandy (plural jack-a-dandies)
- (archaic) A little dandy; a little foppish impertinent fellow.
- (New Zealand) A small patch of light reflected from a shiny surface onto another surface such as a wall or ceiling.
Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.