pol·lard / ˈpälərd/ • v. [tr.] [often as adj.] (pollarded) cut off the top and branches of (a tree) to encourage new growth at the top: a wide boulevard lined with pollarded linden trees.• n. 1. a tree whose top and branches have been cut off for this reason.2. archaic an animal, e.g., a sheep or deer, that has lost its horns or cast its antlers.

pollard To behead a tree at about head height, usually about 2 m above ground level, in order to produce a crown of small branches, suitable for firewood, fencing, etc., beyond the reach of deer or farm livestock. See pollarding. Compare coppice.

pollard horned animal that has lost its horns XVI; tree that has been polled or cut back XVII. f. POLL1 + -ARD.
Hence vb. XVII.

pollard To behead a tree at a convenient height, usually about 2 m above ground level, in order to produce a crown of small poles, suitable for firewood, fencing etc. This allows the production of small material out of the reach of deer and farm livestock.