| Adj. | 1. | in line - being next in a line of succession; "he was in line for the presidency" succeeding - coming after or following |
| 2. | in line - awaiting something; especially something due; "people were in line at the checkout counter"; "she was in line for promotion" eligible - qualified for or allowed or worthy of being chosen; "eligible to run for office"; "eligible for retirement benefits"; "an eligible bachelor" | |
| Adv. | 1. | in line - one behind another in a line or queue; "they waited in line for the tickets" |