/ Dictionary / Index S spendthrift trust: Meaning and Definition of Find definitions for: spend'thrift trust" Pronunciation: [key] — Law. Law. a trust that provides a fund for a beneficiary, as a minor, with the title vested so that the fund or its income cannot be claimed by others, as creditors of the beneficiary. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. spendthrift Spener Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language