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(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.
by tgrbld April 04, 2015
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