1661, "tray," formed in Eng. on the model of
platter, etc., from Fr.
salve "tray used for presenting objects to the king," from Sp.
salva "a testing of food or drink" to test for poison (a procedure known as
pre-gustation), hence "tray on which food was placed to show it was safe to eat," from
salvar "to save, render safe," from L.L.
salvare (see
save).