/ Dictionary / Index R rundlet: Meaning and Definition of Find definitions for: rund•let Pronunciation: (rund'lit), [key] — n. an old British measure of capacity, about 15 imperial gallons (68 liters). a small cask. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rundle run-down Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language