Our respect for Partridge has not blinded us to the features of his work that have drawn criticism over the years. His protocol for alphabetising was quirky. His dating was often problematic. His etymologies at times strayed from the plausible to the fanciful. His classification by register (slang, cant, jocular, vulgar, coarse, high, low, etc.) was intensely subjective and not particularly useful. | back door backdoor backside 24 back door backdoor noun 1 the anus and rectum uk 1694. 2 in sports the advancement of a team in a playoff situation as a result of the actions of another team us 1952. 3 in a group motorcyle ride the last rider in the group usually the most experienced the finalcitizens band radio user in a convoy us 1976. 4 a surreptitious way of entering a protected system or website made possible by a weakness in the system us 1990. go out the back door to back down from a confrontation us 1981 back-door backdoor verb 1 to commit adultery us 1982. 2 in surfing to start a ride behind the peak of a wave us 1980. 3 to bypass something to exclude something Canada 1993 back-door backdoor adjective 1 adulterous us 1947. 2 in poker describing an unexpected hand produced by drawing us 1979 back-door alcoholic noun an alcoholic who admits his alcoholism and joins a twelve-step recovery programme for addicts after initially characterising himself as an enabler of another alcoholic US 1998 backdoor artist noun a swindler especially a drug user who deceives other drug users us 1992 backdoor Betty noun a woman who enjoys analsex us 2000 back-door bust noun an arrest for one crime usually major after a detention or arrest for another usually minor us 1992 back door closed adjective describes a convoy when the final vehicle is looking out for any police interest Citizen band radio slang us 1976 backdooring noun analintercourse uk 1997 backdoor parole backgate parole noun death while serving a prison sentence. A black joke us 1929 backdoor pensioner noun a sheep dog who is past his working days. The term implies an honourable retirement A dog of similar years but just a bit of an old pooch would be more likely referred to as a POT-LICKER NEW ZEALAND 1981 back door trots noun diarrhoea uk 1801 back-double noun a back street a side road uk 1932 back down verb in betting on horse racing to force the odds on a horse lower through heavy betting us 1951 back em down .