One who writes on economy; the writer of a treatise on economy.EGEST'', v.t. [L.egestum, from egero.] To cast or throw out; to void, as excrement.E''GOIST, n. [from L. ego.] A name given to certain followers of Des Cartes, who held the opinion that they were uncertain of every thing except their own existence and the operations and ideas of their own minds.E''GOTIST, n.