(ram) noun
1. A male sheep.
2. An instrument or device for driving, forcing, or crushing by heavy blows or thrusts; specifically, a battering–ram, the striking weight of a pile driver or steamhammer, or the plunger of a force pump.
3. Formerly, a projection or beak on the bow of a warship, for crushing or cutting into an opposing vessel; also, a warship constructed with such a beak.
4. An instrument for raising water by pressure of condensed air; a hydraulic ram.
—v.t. rammed, ram·ming
1. To strike with or as with a ram; dash against.
2. To drive or force down or into something.
3. To cram; stuff. [OE]
—ram′mer noun

(ram) Astron.
The zodiacal constellation Aries.