Noun
someone foolish, easily surprised, or naïve. Used in a slightly derogatory or playful manner. Related to ones expression resembling the open-mouthed O-shape of a guppy fish.
a climbing hold, refers to the way the climber's hand is turned sideways and grips a hold by cupping it with the little-finger side of the hand.
guppie (plural guppies)
Alternative form of guppy
guppie (plural guppies)
(obsolete) A high earning gay person living in a major urban area, especially a male