DCHP-1 Online
breaking-up rapid Obs. 
a rapids so violent as to break up a timber raft.
- 1829 When they are passing a breaking-up rapid, they live in these lairs, until the raft is new withed, and fixed on the still-water below.
- 1829 When they are passing a breaking-up rapid, they live in these lairs, until the raft is new withed, and fixed on the still-water below.