Incrust is a 7 letter English word. It's valid Scrabble word worth 9 points. It's valid Words with friends word worth 12 points.
You can make 188 anagrams from letters in incrust (cinrstu).
From the Latin word incrustāre, dating back to 1635-45. See in-2, crust
It's just the same principle as those lime springs that incrust things with lime.
Take its red robe boldly from it, and weight it with gold and incrust it with jewels.