A woman with a larger than averagecleavage that serves you by letting you use her boobs as a place to hold your beer while using your hands for other purposes.
Carla's boobs are so big I'd use her as my beermaid.
(n.) In the 10-cup, "Beirut" variation of Beer Pong, the Beeramid is a re-rack called at 6 cups in which the cups are arranged in an equilateral triangle, with a base row of three, a mid row of two, and an apex of one. In games in which re-racking is demanded after sinking four cups, this rack is typically the rack required.