Definition of "guppy" [guppy]

• A small, brightly colored live-bearing freshwater fish (Poecilia reticulata or Lebistes reticulatus), native to northern South America and adjacent islands of the West Indies and popular in home aquariums. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Jeffcoat said he booked a reservation on the "guppy" - a nickname that refers to the plane's stubby, round profile - when he heard of the retirement."
• "A guppy is a small life loving creature with an innocence of a child and a thrill for fun and adventure."
• "A: I found two plants sold as goldfish plants, Columnea sp. and Nemantanthus sp., although the second one is also called the guppy plant."