The Romanian dictionary says that it means someone who easily gets out of trouble. In common speech it usually replaces the English "swag" and it's never used in a cultural context. :D Also, you might find some Romanians who pronounce it as "jmecher", but this is wrong. Hope that helped.

I'm not sure I can translate it into English. DEX has a few definitions you may find interesting, though. :-) http://dexonline.ro/

Smecher -> cool Example: Masina aceasta este smechera. This car is cool. Smecherie -> trick Example: El a inteles care a fost smecheria. He understood which was the trick. P.S: It is an informal word (slang word) and you should avoid to use it in a formal disscusion. Hope it was helpful.