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boss

In a sentence
Kto je tvoj šéf?
Who's your boss?
Šéf nás požiadal, aby sme prišli skôr.
The boss asked us to come earlier.
Zajtra máme poradu so šéfom oddelenia.
Tomorrow we have a meeting with the department chief.
Šéf schválil dovolenku celej smene.
The boss approved vacation for the whole shift.
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.