DCHP-1 Online
heap 
n. Obs. in clearing land, a planned procedure for felling trees for burning (def. 1) in such a way that as many as possible fall near or across each other so that an efficient burn results.
See also: burning (def. 1) plan-heap
- 1852 Could he have found an opening through the burning heaps, we could not have seen our way through the dense canopy of smoke.
- 1852 Could he have found an opening through the burning heaps, we could not have seen our way through the dense canopy of smoke.