obežník n.masc. circular
Most of the time I find it hard to remember Slovak words, because I'm new to Slavic languages and it's hard to relate a new word to something I already know. I remember, when my wife and I were first dating, her trying to teach me some basic words of Slovak. The names for the colours bore no resemblance to their names in any other language that I knew, and pretty soon I was wondering whether I would ever make any progress with this language.
Three years down the line, somehow through endless repetition those things have stuck. But it's still very nice when a word creates an image which sticks in your head all on its own. Obežník is a good example - bežať means to run, so of course an obežník is a runner-around: a circular.