This can be defined in two ways:
1. Little kids playing in a giant mud puddle throwing mud at each other, therefore being known as "mud-slinging."
2. Just another politician trying to make a point and get somewhere in the presidential campaign. These pointless acts of slandering the other candidates are also known in the Congressional area as well, like during the elections of State Representatives and Senators.
1. There's the neighbor's kids in my yard throwing mud at each other.
1) One who slanders others.
2) A maker of pottery, usually on a potters wheel. This is due to the fact that as the wheel spins it "slings" slip or mud.