Quote Originally Posted by Antonio1986 View Post
Does this word means: peаnuts (for something no important)
As alexsms correctly mentioned, "семечки" literally means 'sunflower seeds'...
Sunflower seeds are cheap and used to be (maybe still are) a popular snack. They are usually sold unshelled and they are much easier to crack than nuts. So the expression "щёлкать как семечки" (crack like sunflower seeds) means "the ability to do something quickly and easily."