expense
ex.pense \ik-'spen(t)s\ n [ME, fr. AF or LL; AF, fr. LL expensa, fr. L, fem. of expensus, pp.] of expendere archaic 1a: the act or practice of expending money : SPENDING archaic 1b1: the act or process of using up : CONSUMPTION obs 1b2: LOSS 2a: something expended to secure a benefit or bring about a result 2b: financial burden or outlay : COST 2c: the charges incurred by an employee in connection with the performance of his duties - usu. used in pl. 2d: an item of business outlay chargeable against revenue for a specific pe riod 3: a cause or occasion of expenditure 4: SACRIFICE - usu. used in the phrase at the expense of
Webster's English Dictionary