Answer:
I hold two meanings. With one I may be broken with the other I hold on.
With three eyes and as black as night I frequently knock down ten men with a single strike!
Until I am measured, I am not known. Yet, how you miss me when I have flown. What Am I?
When you buy me I am costly, but the only use I have is hanging only. What am I?
I have hands but cannot clap
When is it bad luck to see a black cat?