Of a tree, timber, etc.: decayed inside, rotten, unsound.

Of a tree: that has lost its branches or upper trunk, esp. through age, damage, or decay; (also) that has been pollarded or cut back.

Of trees: decaying, rotten, esp. from age.

Of a tree or bough: partially decayed or dead; bare of leaves or twigs.

Pollard, of which the top has been cut off.

A word conventionally used (? after Dryden) as an attribute of old oaks (rarely other trees); apparently originally meaning: Having lost the top…

A tree that has lost its head of branches by decay. In quot. 1693 attributive = dotard, adj.2

Of a tree: decayed, dying, dead; bare of foliage; = rampike, adj.