The Collaborative International Dictionary of English v.0.48:
Ingraft \In*graft"\, v. t. [imp. & p. p. Ingrafted; p. pr. &
vb. n. Ingrafting.] [Written also engraft.]
1. To insert, as a scion of one tree, shrub, or plant in
another for propagation; as, to ingraft a peach scion on a
plum tree; [figuratively], to insert or introduce in such
a way as to make a part of something.
This fellow would ingraft a foreign name
Upon our stock. --Dryden.
A custom . . . ingrafted into the monarchy of Rome.
2. To subject to the process of grafting; to furnish with
grafts or scions; to graft; as, to ingraft a tree.