n. 油画用的调色油

[ noun ]
a medium for oil-paints; linseed oil mixed with mastic varnish or turpentine
<noun.substance>

Megilp \Me*gilp"\, Megilph \Me*gilph"\, n. (Paint.)
A gelatinous compound of linseed oil and mastic varnish, used
by artists as a vehicle for colors. [Written also {magilp},
and {magilph}.]