what is the meaning of this break point icon? Why is it crossed out?

what is the meaning of this break point icon? Why is it crossed out?

That means you have selected to skip all breakpoints the breakpoints in eclipse via the small button in eclipse's breakpoint view. The button have the same icon.
That means . That break point is not active. In eclips we have option to active and detective the break point as we required.
Hope you get your answer.