Dictionary › I › in line
in line
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Quick answer
As an adjective, in line means being next in a line of succession. As an adverb, it means one behind another in a line or queue.
Meanings of in line
3 meaningsadjective
Being next in a line of succession
“he was in line for the presidency”
Awaiting something; especially something due
“people were in line at the checkout counter”
“she was in line for promotion”
adverb
One behind another in a line or queue
“they waited in line for the tickets”
Meanings from Wiktionary (CC BY-SA 4.0) and Open English WordNet (CC BY 4.0).