The definition of cost is the amount paid for something or the expense of doing something.(noun)
An example of a cost is $3 for a half gallon of milk.
Cost is defined as to be priced at something or to lose.(verb)
See cost in Webster's New World College Dictionary
Origin: ME costen < OFr coster < ML costare < L constare, to stand together, stand at, cost < com-, together + stare, to stand
See cost in American Heritage Dictionary 4
Origin: Middle English
Origin: , from Old French
Origin: , from coster, to cost
Origin: , from Latin cōnstāre, to be fixed, cost; see constant.
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