What is "charter party"

Chirograph \Chi"ro*graph\, n. [Gr. ? written with the hand; chei`r hand + gra`fein to write.] (Old. Law)

1. A writing which, requiring a counterpart, was engrossed twice on the same piece of parchment, with a space between, in which was written the word chirographum, through which the parchment was cut, and one part given to each party. It answered to what is now called a charter party.

2. The last part of a fine of land, commonly called the foot of the fine.
   --Bouvier.

Charter Party (4 May 1978 – June 2000) was an Irish-bred British-trained Thoroughbred racehorse, best-known for his win in the 1988 Cheltenham Gold Cup. He overcame persistent injury problems to win twelve races under National Hunt rules. He showed promise as a hurdler and as a Novice steeplechaser before recording his first major win in the 1986 National Hunt Handicap Chase. As a ten-year-old in 1988 he defeated Desert Orchid in the Gainsborough Chase, before taking the Gold Cup at Cheltenham in March. He never won again, but produced a fine effort to finish third on heavy ground in the 1989 Gold Cup.