/ Dictionary / Index B block trade: Meaning and Definition of Find definitions for: block' trade" Pronunciation: [key] the purchase and sale of blocks of securities through brokers, sometimes not members of an exchange, who negotiate between buyers and sellers. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. block tin blocky Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language