transcription, транскрипция: [ bɔ:(r)də(r)laɪn ]
( borderlines)
1.
The borderline between two different or opposite things is the division between them.
...a task which involves exploring the borderline between painting and photography.
N-COUNT : usu N between/of n
2.
Something that is borderline is only just acceptable as a member of a class or group.
Some were obviously unsuitable and could be ruled out at once. Others were borderline cases.
ADJ