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director

In a sentence
Riaditeľ otvoril školu.
The principal opened the school.
Riaditeľ školy prišiel neskoro.
The school principal arrived late.
Je riaditeľom firmy.
He is the director of the company.
Riaditeľ školy otvoril nový školský rok.
The school principal opened the new school year.
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Hand-reviewed example sentences.
Full attribution on References.