1. [mid-19C] (also slick over) to get something finished with or disposed of quickly.
2. [mid-19C+] to swindle, to hoax, to cheat.
a derog. term for a Jew, implying duplicitous, persuasive talk .
1. [mid-19C+] (US) to tidy (oneself), to make neat; thus slicked up, tidy.
2. [1910s–50s] in fig. use, to arrange, to defeat, to ‘make good’.
see sense 1 above.