This is the 10021st most frequent Turkish word.
bak
"Look" or "see."
In this sentence, 'bak' is used as an imperative verb meaning 'look' or 'view' in a directive manner.
Eve giderken bir dükkana bak.
Look at a shop while going home.
Here, 'bakar mısın' is used in a polite request form, suggesting 'would you look at/watch' in i context.
Bu film gerçekten çok güzel, izlemeye bakar mısın?
This film is really nice, can you watch it?
In this sentence, 'bir bak' conveys the meaning 'take a glance or investigate' as a suggestion for consideration.