Meaning of Words in the outsiders

The word listed below are found in Chapters 1 and 2 in THE OUTSIDERS.

Sometimes reading a word IN CONTEXT (as it appears in the story with others words around it), enables the reader to figure out what it means. Then Create a sentence with it to show you understand. (So first what it means then put it in a sentence)

Word: SWITCHBLADE

I KNOW YOU CANT PUT IN A SENTENCE THEN PLEASE TELL THE MEANING