Surplus \Sur"plus\, n. [F., fr. sur over + plus more. See Sur-, and Plus, and cf. Superplus.]

1. That which remains when use or need is satisfied, or when a limit is reached; excess; overplus.

2. Specifically, an amount in the public treasury at any time greater than is required for the ordinary purposes of the government.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Surplus \Sur"plus\, a. Being or constituting a surplus; more than sufficient; as, surplus revenues; surplus population; surplus words.

When the price of corn falleth, men give over surplus tillage, and break no more ground. --Carew.

Source: Webster's Revised Unabridged Dictionary (1913)