Sumptuary \Sump"tu*a*ry\, a. [L. sumptuarius, fr. sumptus expense, cost, fr. sumere, sumptum, to take, use, spend; sub under + emere to take, buy: cf. F. somptuaire. See Redeem.]

Relating to expense; regulating expense or expenditure. --Bacon.

Sumptuary laws or regulations, laws intended to restrain or limit the expenditure of citizens in apparel, food, furniture, etc.; laws which regulate the prices of commodities and the wages of labor; laws which forbid or restrict the use of certain articles, as of luxurious apparel.

Source: Webster's Revised Unabridged Dictionary (1913)