ROOF, noun

1. The cover or upper part of a house or other building, consisting of rafters covered with boards, shingles or tiles, with a side or sides sloping from the ridge, for the purpose of carrying off the water that falls in rain or snow. In Asia, the roofs of houses are flat or horizontal. The same name, roof is given to the sloping covers of huts, cabins and ricks; to the arches of ovens, furnaces, etc.

2. A vault; an arch; or the interior of a vault; as the roof of heaven.

3. The vault of the mouth; the upper part of the mouth; the palate.

If I do not remember thee, let my tongue cleave to the roof of my mouth. Psalms 137:6.

ROOF, verb transitive

1. To cover with a roof

I have not seen the remains of any Roman buildings, that have not been roofed with vaults or arches.

2. To inclose in a house; to shelter.

Here had we now our country's honor roof'd.