Definition of Dwindle

Babylon English Dictionary
diminish, decrease, wane, fade, peter out
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Dwindle Definition from Language, Idioms & Slang Dictionaries & Glossaries
Webster's Revised Unabridged Dictionary (1913)
(v. t.)
To make less; to bring low.
  
(v. t.)
To break; to disperse.
  
(v. i.)
To diminish; to become less; to shrink; to waste or consume away; to become degenerate; to fall away.
  
(n.)
The process of dwindling; dwindlement; decline; degeneracy.
  
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
hEnglish - advanced version

dwindle
\dwin"dle\ (?), v. i. [imp. & p. p. dwindled (?); p. pr. & vb. n. dwindling (?).] [from oe. dwinen to languish, waste away, as. dwīnan; akin to lg. dwinen, d. dwijnen to vanish, icel. dvīna to cease, dwindle, sw. tvina; of uncertain origin. the suffix -le, preceded by d excrescent after n, is added to the root with a diminutive force.] to diminish; to become less; to shrink; to waste or consume away; to become degenerate; to fall away. weary sennights nine times nine shall he dwindle, peak and pine. religious societies, though begun with excellent intentions, are said to have dwindled into factious clubs.
dwindle
\dwin"dle\, v. t.
1. to make less; to bring low. our drooping days are dwindled down to naught.
2. to break; to disperse. [r.]
dwindle
\dwin"dle\, n. the process of dwindling; dwindlement; decline; degeneracy. [r.]

for Vocabulary Exams of KPDS, YDS,UDS (in Turkey); and SAT in America
To diminish or become less.
WordNet 2.0

Verb
1. become smaller or lose substance; "Her savings dwindled down"
(synonym) dwindle away, dwindle down
(hypernym) decrease, diminish, lessen, fall
(derivation) dwindling, dwindling away