I filled out an aplication that said entry level and experience employees are needed. what is entry level?

It means you'll start out at the bottom of the food chain which reserves everyone the right to slap you around like a red-headed stepchild.

You'll start off in the mail room. Sleeping your way to the top with whomever and whenever.

it means... "do you want fries with that?"

remember to bring knee pads you'll need them on your first day of work

It usually does mean that you do not need prior experience in the industry to be considered. They will train you for your duties in the job.

it can mean that or it can mean you have gone to school for a particular job but do not yet have work experience in that field.

Correct, little or no experience

yes...entry level means non-management and basic work experience in the field may or may not be required

Yes it means people who are willing to be trained as well as people with experience.