noun

• (architecture) The external covering at the top of a building.
  "The roof was blown off by the tornado."
• (mining) The surface or bed of rock immediately overlying a bed of coal or a flat vein.
• (climbing) An overhanging rock wall.
• (slang, archaic) A hat.
  "Tom thought his cap a very knowing affair, but confessed that he had a hat in his hat-box; which was accordingly at once extracted from the hind-boot, and Tom equipped in his go-to-meeting roof, as his new friend called it."

verb

• (transitive) To cover or furnish with a roof.
  "A trench about ten feet deep was dug in the ground and roofed over with sticks and earth so as to form a dark tunnel."
• (transitive, slang) To put into prison, to bird.
  "Did you see them, David? I mean, did you see them looking at me? I-I'm walking out of the court, and everybody was practically – yeah, they were gawking. […] I mean, Noah roofed me, I proved it, end of story."
• (transitive) To shelter as if under a roof.
  "They reached him: the pieces of rock had roofed him over—he was without injury or scratch."

name

• (astronomy) A Chinese constellation located near Aquarius and Pegasus, one of the 28 lunar mansions and part of the larger Black Turtle.