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piece

In a sentence
Dali Tomovi kúsok torty.
They gave a piece of cake to Tom.
Jeden kúsok ostal.
There's one piece left.
Daj mi ešte kúsok syra k chlebu.
Give me another piece of cheese with the bread.
Zostal nám len malý kúsok cesty.
We only have a small stretch of the road left.
Examples from Tatoeba (CC BY 2.0 FR).
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Includes Tatoeba example sentences when present.
Full attribution on References.