context clues

Because the sun is out and the day is searing, Justin decided to go inside and play. What does the word "searing" mean?

His disheveled hair looked as if a bird had tried to make a nest in it.

There was perspiration, or sweat, dripping from his hot face after P.E.

We are always very careful around Mr. Sutton's dog Buster. The neighbors say the dog is vicious. Buster runs to the fence and barks at us, so we are a little scared of him.

Based on the context clues in the paragraph, what is the meaning of vicious?

Scott could not find his glasses anywhere. He worried that he might have thrown them away when he was cleaning his room. He began to rummage through the garbage hoping that he would find them.

What does the word rummage mean?