1try to influence or thwart by underhand or unfair methods:an attempt to nobble the jury
tamper with (a racehorse or greyhound) to prevent it from winning a race, especially by giving it a drug:a doping ring nobbled three of the trainer’s horses in 1990
2obtain dishonestly; steal:he intended to nobble Rose’s money
seize or accost (someone):they nobbled him and threw him on to the trainpeople always tried to nobble her at parties