imp

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A mischievous child.
2. n. A small demon.
3. n. Obsolete A graft.
4. v. To graft (new feathers) onto the wing of a trained falcon or hawk to repair damage or increase flying capacity.
5. v. To furnish with wings.

Century Dictionary and Cyclopedia

1. n. A scion; shoot; graft; bud; slip.
2. n. A son; offspring; progeny.
3. n. A young or small devil.
4. n. A mischievous or pert child.
5. n. A spirit other than a devil.
6. n. Something added or united to another thing to repair or lengthen it out; particularly, a feather inserted in a broken wing of a bird. See imp, v. t., 2. Synonyms Sprite, hobgoblin.
7. To graft.
8. To extend or enlarge by something inserted or added; extend or mend, as (in falconry) a broken or deficient wing by the insertion of a feather; qualify for flight or use; strengthen.
9. To rob.
10. n. The length of twisted hair in a fishing-line.
11. n. An abbreviation of the Latin Imperator, emperor;
12. n. of Imperatrix, empress.
13. n. An abbreviation of imperative;
14. n. of imperfect (tense);
15. n. of imperial;
16. n. of impersonal;
17. n. of the Latin imprimatur, let it be printed.

Wiktionary

1. v. obsolete To plant or engraft.
2. v. falconry To engraft feathers into a bird's wing.
3. v. To eke out, strengthen, enlarge.

GNU Webster's 1913

1. n. obsolete A shoot; a scion; a bud; a slip; a graft.
2. n. obsolete An offspring; progeny; child; scion.
3. n. A young or inferior devil; a little, malignant spirit; a puny demon; a contemptible evil worker.
4. n. Obs. or Prov. Eng. Something added to, or united with, another, to lengthen it out or repair it, -- as, an addition to a beehive; a feather inserted in a broken wing of a bird; a length of twisted hair in a fishing line.
5. v. obsolete To graft; to insert as a scion.
6. v. (Falconry), figurative, Archaic, figurative, Archaic, Archaic To graft with new feathers, as a wing; to splice a broken feather. To repair; to extend; to increase; to strengthen; to equip.

WordNet 3.0

1. n. one who is playfully mischievous
2. n. (folklore) fairies that are somewhat mischievous