- Any of various small or half-grown edible herrings or related fishes of the family Clupeidae, frequently canned in oil or water, especially the pilchard of European waters. (noun)
- Any of numerous small, silvery, edible freshwater or marine fishes unrelated to the sardine. (noun)
- Slang To pack tightly; cram: "The bars are sardined with hungry hopefuls” ( Gael Greene). (verb-transitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.