This is the large, concave washer that is fitted onto the rear of the crankshaft. It's installed with the center angled forward. The slinger helps keep the oil from spitting out from around the crank pulley since it's un-sealed. If you have a problem with oil spewing out from around the crank pulley, you may have a slinger installed backwards.

A device on the shaft or rubbing on it that prevents entrance of abrasive material into the bearing. Also the washer-like attachment to a shaft or part of the shaft that prevents oil from leaking into the motor or out of the bearing.

a thief/mercenary character class from Aelstrom

A bull that tries to hit the cowboy with his head or horns while the contestant is on his back.

a person who uses a sling to throw something

One who slings, or uses a sling.