All 4 Uses

graft
in
Dune
(Edited)

Full of well-trained feelings and abilities and all of them grafted onto me — all bearing for someone else to pick.
Book 1 *

grafted = joined
Hawat here estimates that graft and extra fighting men heretofore required in their operations have been costing them four times that amount.
Book 1 *

graft = dishonest conduct (such as bribery) for personal gain
No more graft!
Book 1
He'll also serve notice that you're prepared to back up your orders against graft—by enforcement from the smugglers' end as well.
Book 1

Definitions:

(1) (graft as in: skin graft)
to artificially join two things; or the smaller of the items joined; or the location of the joining

Common examples are the grafting of a plant shoot to another plant stem or the grafting of skin tissue to replace skin lost due to fire or other accident. This sense of graft can also be used metaphorically as in "graft the provision onto the legislative bill."
(2) (graft as in: graft and corruption)
corruption in which one uses their position to gain personal advantage -- especially political corruption
(3) (meaning too rare to warrant focus)