Meaning

noun the top edge of a vessel or other container

noun a circular projection that sticks outward from the crown of a hat

verb be completely full

originThe verb is derived from Middle English brimmen (“of pigs: to be in heat or rut; to breed; to bear fruit”), either: * modified from brem, breme (“of animals: ferocious, savage; of fire, the sea, a storm, etc.: raging, severe, tempestuous; glorious, splendid; etc.”, adjective) (whence modern English breme (“(obsolete) fierce, stormy, tempestuous”)), from Old English brēme (“(poetic) glorious;…

Etymology from Wiktionary, CC BY-SA 3.0