This is the 767th most frequent Slovak word.
mal
"Mal" in Slovak means "had" (past tense of "to have").
In this sentence, 'mal' is the past tense of the verb 'mať', meaning 'to have', and it expresses possession or occurrence.
Včera som mal stretnutie s kolegom.
Yesterday, I had a meeting with a colleague.
Here, 'mal' is used as part of the conditional perfect tense, implying an obligation or suggestion.
Mal by si sa ospravedlniť za svoje správanie.
You should apologize for your behavior.
In this context, 'mal' indicates possession of an abstract concept, luck, in the past tense.