Definition of unline:
(v) :
To remove or separate the lining from.
(v) :
To remove or destroy one or more lines.
(v) :
To take out of (literal or figurative) alignment; to disconnect.
(v) :
(figurative) To empty (a purse).
(v) :
(botany) To undergo a (now debunked) process in which the tissue of a plant separates into identical layers.