look up any word, like dirty sanchez:
 
1.
a whore; a promiscuous female
janet had sex with like every dude at that party. what a smease!
by rachelrachelrachel March 24, 2006
 
2.
short for siamease-twin. generally used for two best friends who are "joined" at the hip.
this is my smease
by Munchkin81 July 15, 2011