megilph

Noun

megilp (countable and uncountable, plural megilps)

1. A mixture of linseed oil with turpentine or mastic varnish, used as a thickener for oil paints but later discredited as a source of cracking and yellowing.
   • He was in a hurry […] and instead of replicating the twenty or so layers of paint in the original he used megilp to give the impression of thickly applied paint.2002, Victoria Finlay, Colour, Sceptre, published 2003, page 202