A term of defeat and excitement for a fly angler describing the event of a hooked fish breaking your tippet or leader. Usually a break off results from an unusually strong or big fish. 
A fish lost when the line breaks, as opposed to losing fish when the hook breaks, straightens or pulls out.
To cease formation skydiving by tracking away from the formation prior to deployment
the first shot of the match, played with the cue ball in the 'D'.
discontinue verb prevent completion; `stop the project`; `break off the negotiations`