from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A small brownish tree frog (Hyla crucifer) of eastern North America, having a characteristic shrill, high-pitched call.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A frog of a particular species (Pseudacris crucifer).
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a small brown tree toad having a shrill call heard near wetlands of eastern United States and Canada in early spring
It peeps (makes a sound) in the spring (the season). (Wiktionary)