REVENUE n.
That which returns, or comes back, from an investment; the annual rents, profits, interest, or issues of any species of property, real or personal; income. Do not anticipate your revenues and live upon air till you know what you are worth. Gray.
SAFETY n.
steam, or confined gas, water, etc., from a boiler, or other vessel, when the pressure becomes too great for safety; also, sometimes, a similar valve opening inward to admit air to a vessel in which the pressure is less than that of the atmosphere, to prevent collapse.
SECOND n.
One who, or that which, follows, or comes after; one next and inferior in place, time, rank, importance, excellence, or power. Man an angel's second, nor his second long. Young.