Up-hōl'ster-er, n.

(20), n. [A corruption of upholder, and formerly also written upholster, upholdster, upholderer.] One who furnishes houses with furniture, beds, curtains, and the like.

☞ “This form of the previous word [upholder] was probably adopted for the sake of a more clear distinction between the business of an upholder or furnisher of funerals, and [that of] an upholder or furnisher of houses—a distinction the more necessary as the businesses, though often joined, are as frequently separated.” Smart.