What is Perquisites?

Legal Definition
In its most extensive sense, perquisites signifies anything gotten by industry, or purchased with money, different from that which descends from a father or ancestor. Bract. lib. 2, c. 30, n. 8; et lib. 4, c. 22. In a more limited sense it means something gained by a place or office beyond the regular salary or fee.
-- Bouviers Law Dictionary
Legal Definition
In its most extensive sense, "perquisites" signifies anything obtained by industry or purchased with money, different from that which descends from a father or ancestor. Bract 1. 2, c. 30, n. 3. Profits accruing to a lord of a manor by virtue of his court-baron, over and above the yearly profits of his land; also other things that come casually and not yearly. Mozley & Whitley. In modern use. Emoluments or incidental profits attaching to an office or official position, beyond the salary or regular fees. Delaplane v. Crenshaw, 15 Grat (Va.) 468; Vansant v. State, 96 Md. 110, 53 All. 711; Wren v. Luzerne County, 6 Knlp (Pat) 37.
-- Black's Law Dictionary
Legal Definition
Fees, allowances or privileges beyond the ordinary fees or compensation of an officer or employee. See o4 Mo. 385, 14 Am. Rep. 476.
-- Ballentine's Law Dictionary