a hill in Charlestown, Mass.: the first major battle of the American Revolution, known as the Battle of Bunker Hill, was fought on adjoining Breed's Hill on June 17, 1775.
Bun·ker Hill (bŭng'kər) A low elevation, 32.6 m (107 ft) high, in Charlestown, a section of Boston, Massachusetts. The first major Revolutionary War battle was named for this hill, though the actual fighting took place on nearby Breed's Hill on June 17, 1775.