It means most important. For example, a priority for you would be to get good grades. It's currently the most important thing for you right now.
Answer:
similie: Her smile was like sunshine peeking through the clouds.
metaphor: I didn't realize what a pain in the neck she could be.
personification: The book grabbed me and I was forced to finish that night.
onomatopoeia: The car banged into the wall with a "CLASH", causing a ring into everyones ear drums.
Explanation:
