A vegetable was a food item that came from the ground. According to the Fifth Doctor, 11th century Europeans thought of vegetables as peasant food. (PROSE: The Immortals)
The Fifth Doctor wore a stick of celery, which the Tenth Doctor described as a "decorative vegetable". (TV: Time Crash)
At a trade meeting with the Hufko, Ormsin Ives offered them vegetables. (PROSE: The Diplomat's Story)
The Daleks claimed to offer the Thals fresh vegetables that were created with synthetic sunlight. (TV: "The Escape")
At some point, the Ninth Doctor carried fruit and vegetables through the Los Angeles fashion district. (PROSE: Have You Seen This Man?)
Ianto Jones was told by Jack Harkness that he was not eating enough vegetables. To rectify this, he ordered a tub of coleslaw in addition to two Pepperoni Feasts for Torchwood Three from Jubilee Pizza as Jack Harkness. (TV: Cyberwoman)
Graham O'Brien noted the avocado to be a fruit, while Ryan Sinclair believed it was a vegetable. (TV: The Tsuranga Conundrum)
Other references[]
The Aja'ib contained tales involving talking vegetables. (PROSE: Bafflement and Devotion)
Marc Cory described the varga plant as "part animal, part vegetable." (TV: Mission to the Unknown)
Animal, Vegetable, Mineral? was a successful panel game for archaeology experts that ran on British television from 1952 to 1959. (PROSE: The Time Traveller's Almanac)