The rates of exchange of foreign coins were fixed by proclamation, and the office of exchanger limited to a particular place.
He cannot exist, except as a beggar, unless he puts himself in the condition to become an exchanger.
During the course of the unprofitable labour of waiting till he had found an exchanger who wanted coals, he might have perished.
late 14c., "act of reciprocal giving and receiving," from Anglo-French eschaunge, Old French eschange (Modern French échange), from Late Latin excambium, from excambiare, from Latin ex- "out" (see ex-) + cambire "barter" (see change). Practice of merchants or lenders meeting to exchange bills of debt led to meaning "building for mercantile business" (1580s).
late 15c., from Old French eschangier "exchange, barter," from Vulgar Latin *excambiare (source of Italian scambiare); see exchange (n.). Related: Exchanged; exchanging.
exchange ex·change (ĭks-chānj')
v. ex·changed, ex·chang·ing, ex·chang·es
To substitute one thing for another. n.
The act of substituting one thing for another.