firstinline
adjectiveUK /ˌfɜːst ɪn ˈlaɪn/
US /ˌfɜːrst ɪn ˈlaɪn/
Being the first person or thing in a line.
She was firstinline at the ticket counter and got the best seat.
OTHER MEANINGS
2. Being the first to get a chance or turn.
Because he arrived early, he was firstinline for the interview.
3. Placed at the very front of a row or sequence.
The firstinline runner carried the team flag.
4. Next to be chosen or used.
The firstinline backup player warmed up on the sideline.