rooftree

Noun

roof=tree

WORDNET DICTIONARY

rooftree(n = noun.artifact) ridge, ridgepole - a beam laid along the edge where two sloping sides of a roof meet at the top; provides an attachment for the upper ends of rafters;

is a kind of beam

is a part of gable roof, saddle roof, saddleback, saddleback roof

rooftree, n.

The beam in the angle of a roof; hence, the roof itself. [1913 Webster]

"Now for me the woods may wither, now for me the rooftree fall." [1913 Webster]