1. Partially melted snow or ice: This is the most common meaning. Slush is a mixture of snow or ice that has melted slightly, making it soft and mushy. It's often found on sidewalks and roads after a winter snowfall.
2. A cheap, watery drink: This meaning is often used for cocktails or other drinks that are made with inexpensive ingredients and lots of ice.
3. Money: This slang meaning refers to money that's easily obtained or considered unimportant.
4. A disorganized or messy situation: This is a more informal meaning and suggests a lack of order or control.
To understand the specific meaning of "slush" in a particular situation, consider the context and the surrounding words.