What is the meaning of Orderly?

Neat and tidy; possessing order.

Methodical or systematic.

Peaceful; well-behaved.

Being on duty; keeping order; conveying orders.

A hospital attendant given a variety of non-medical duties.

A soldier who carries out minor tasks for a superior officer.

According to good order or practice; appropriately, in a well-behaved or orderly (adjective) way.

In order; in a particular order or succession; with a suitable arrangement.

Source: wiktionary.org