A slush is a combination slut/lush; a portmanteau if you will...if i may. a slush is a woman who is promiscuous and drinks heavily; constantly. they can usually be found at your local dive bar most nights of the week. they have no outward care towards responsibility related things, they mostly prefer to drink and sleep around.
i met this sloppy slush at the bar last night. she's not much to look at but she can hold her liquor like a pirate.