What is the meaning of Malayalam word ko lam?

"Ko lam" is not a valid Malayalam word. It's possible you've made a typo or are thinking of a similar-sounding word.

To help me understand what you meant, could you please provide some context? For example:

* Where did you hear this word?

* What was the sentence or phrase it was used in?

* What do you think it might mean?

Knowing this will help me figure out what you're asking and provide a correct answer.