(noun): Word used to describe female employees of Costco that are flirtatious and physically attractive. CostHos usually wear tight jeans and work at the check-out stand. It is estimated that 62% of CostHos have sandy blonde hair and are aged between 30-44 years old. A select few CostHos had previous occupations as strippers.
I need to go shopping at Costco.
Wait, don't go before 2:00 PM because the CostHos aren't working until the afternoon.
Hey, let's go to Costco and eat free samples and look at CostHos.