Look up this word
heart

In a sentence
Bolí ma srdce.
My heart's aching.
Snažím sa dobyť jeho srdce.
I am trying to conquer his heart.
Musíš nasledovať svoje srdce.
You have to follow your heart.
Veselé srdce slúži na zdravie.
A merry heart does good like a medicine.
Examples from Tatoeba (CC BY 2.0 FR).
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Example sentences from Tatoeba (CC BY 2.0 FR).
Full attribution on References.