Quaking p. pr. & vb. n. : of Quake

Quaking : a. & n. from Quake, v.

Example:
How do you kill Quaking aspen trees?

Taxonomy
quaking aspen, Merriam-Webster Online Dictionary, Dictionary, webster, Word Games, Webster Online Dictionary with audio pronunciations, thesaurus, Google Search, Custom Search, glossary, english, language, ESL, Search, 1812, Populus tremuloides, chiefly, United States and Canada.

Defination from the web:
quaking aspen from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. ... Learn more about "quaking" and related topics at Britannica.com. Pronunciation Symbols. Share this entry: Link to this page: Cite this page: Products ...