lowballPronunciation: /ˈləʊbɔːl/Definition of lowball noun Baseball a ball pitched so as to pass over the plate below the level of the batter’s knees. [as modifier] North American informal (of an estimate, bid, etc.) deceptively or unrealistically low. verb [with object] North American informal offer a deceptively or unrealistically low bid or estimate: are you being lowballed by someone who hopes to make money on extras later?lowball in other Oxford dictionaries Definition of lowball in the US English dictionary