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The Collaborative International Dictionary
Megilph

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.]

Wiktionary
megilph

n. (alternative form of megilp English)