Round-face is a slur used to describe Slovakians in a derogatory way. They are said to have round faces.
The word Round-face is a racial slur that has been used historically to degrade and dehumanize slovakians. The word is still used by some people for this purpose, and it is seen as offensive and hurtful to slovakians. If you are unsure about whether or not it is appropriate to use the word Round-face, it is best to err on the side of caution and avoid using it in any situation.