/ Dictionary / Index B botulin: Meaning and Definition of Find definitions for: bot•u•lin Pronunciation: (boch'u-lin), [key] — n. the toxin formed by botulinus and causing botulism. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: botulin (Thesaurus) Botts dots botulinus 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