pol·lard 
(pŏlərd)
(pŏlərd)n.
1. A tree whose top branches have been cut back to the trunk so that it may produce a dense growth of new shoots.
2. An animal, such as an ox, goat, or sheep, that no longer has its horns.
tr.v. pol·lard·ed, pol·lard·ing, pol·lards
To convert or make into a pollard.
[From POLL.]