Hornwork

n. (Fort.) An outwork composed of two demibastions joined by a curtain. It is connected with the works in rear by long wings. [ 1913 Webster ]

n. 1. preparatory school work done outside school (especially at home).
Syn. -- prep, preparation. [ WordNet 1.5 ]

2. Hence: [ fig. ] Studies or other preparatory work done prior to some activity; -- usually used of preparations for activities of significance or consequence for the performer; as, the candidate didn't do her homework well and was outclassed in the debate. [ PJC ]

3. Paid work done at home, especially piecework. [ PJC ]