The Collaborative International Dictionary
Imp \Imp\, v. t. [imp. & p. p. Imped; p. pr. & vb. n. Imping.] [AS. impian to imp, ingraft, plant; akin to Dan. ympe, Sw. ympa, OHG. impf[=o]n, impit[=o]n, G. impfen. See Imp, n.]
To graft; to insert as a scion. [Obs.]
--Rom. of R.-
(Falconry) To graft with new feathers, as a wing; to splice a broken feather. Hence, [Fig.]: To repair; to extend; to increase; to strengthen; to equip. [Archaic]
Imp out our drooping country's broken wing.
--Shak.Who lazily imp their wings with other men's plumes.
--Fuller.Here no frail Muse shall imp her crippled wing.
--Holmes.Help, ye tart satirists, to imp my rage With all the scorpions that should whip this age.
--Cleveland.
Imping \Imp"ing\ ([i^]mp"[i^]ng), n. [See Imp to graft.]
The act or process of grafting or mending. [Archaic]
(Falconry) The process of repairing broken feathers or a deficient wing.
Wiktionary
n. The act or process of grafting or mending.