What is the meaning of "have a blast"?

The meaning of "have a blast" is:

have a great time


What is the definition of "have a blast"?

The definition of "have a blast" is:

have a great time



"have a blast" means

have a great time

Example Sentences:

Have fun on your vacation, I hope you have a blast.

A: How was your class?
B: I had a blast! My teacher, Mike, is so great!

Dear Mom,
I am having a blast here in Canada. I hope to see you soon!
Love,
Son

From the Blogs:
Angels Have a Blast Against Yankees

Media:

have a blast