This is the 375th most frequent Dutch word.
zeg
"Zeg" means "say" or "tell" and can also be used as an interjection like "hey" to get attention.
Here, 'zeg' is used as an interjection that draws attention or initiates a statement, similar to 'say' in English.
Zeg, wist je dat er vandaag een markt is?
Say, did you know there's a market today?
In this case, 'zeg' is part of the verb 'zeggen', meaning 'to say', referring directly to the act of speaking.
Wat zeg je? Ik kon je niet horen.
What are you saying? I couldn't hear you.
Here, 'zeg maar' (literally 'say, but') works as a filler phrase in Dutch, used to moderate or clarify a statement.