in line

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective idiomatic Suitable or appropriate; keeping with expectations, norms, ideals, or rules.
• adjective of three or more objects Positioned in a straight line.
• adjective not comparable assuming a position in the future.
• adverb one behind another; in a queue

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• adverb one behind another in a line or queue
• adjective awaiting something; especially something due
• adjective being next in a line of succession