from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A sudden gathering of force, as of public opinion: a groundswell of antiwar sentiment.
- n. A broad deep undulation of the ocean, often caused by a distant storm or an earthquake.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A broad undulation of the open ocean, often as the result of a distant disturbance
- n. A broadly-based shifting of public opinion
from the GNU version of the Collaborative International Dictionary of English
- n. A broad, deep swell or undulation of the ocean, caused by a long continued gale, and felt even at a remote distance after the gale has ceased.
- n. A long, deep wave in the sea, sometimes caused by distant winds or storms.
- n. A rising sentiment of support or enthusiasm, especially among the general public.
- n. See under Ground.
from The Century Dictionary and Cyclopedia
- n. An obsolete variant of groundsel.
- n. A broad, deep swell or rolling of the sea, occasioned by a distant storm or heavy gale, and sometimes also by distant seismic disturbances: sometimes used figuratively of a rolling surface of country, and also of a rising wave of sound or of emotion.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a broad and deep undulation of the ocean
- n. an obvious change of public opinion or political sentiment that occurs without leadership or overt expression
ground + swell (Wiktionary)