An earring was a type of jewellery worn on the ear.
Ace wore Flowerchild's earring on her black bomber jacket. (TV: The Greatest Show in the Galaxy)
Rose Tyler wore earrings. Some were hoops, (TV: Dalek, Doomsday) and some had gems. (TV: The Idiot's Lantern)
A feminine version of the Doctor with a bald head and dark skin wielding a flaming sword wore pearl earrings. (PROSE: Rose)
The Thirteenth Doctor wore golden-ringed ear cuffs at the top and at the lobe of her left ear. The top cuff was a series of eight joint stars, and the bottom cuff was in the shape of two hands holding each other. (TV: The Woman Who Fell to Earth [+])
Christina de Souza wore diamond earrings. As she evaded police, she gave them to a bus driver in exchange for a bus ride. (TV: Planet of the Dead [+]Russell T Davies and Gareth Roberts, Doctor Who Easter Special 2009 (BBC One, 2009).)
While visiting the Quadrant in 1987, Chris Cwej got an earring in his right ear. At the time in England, this was an indication that the wearer was gay, but Chris was initially unaware of the significance. (PROSE: Damaged Goods)
A Fifth Axis soldier made fun of Oliver Norman's earring. When Oliver talked back, he was killed. (PROSE: The Birthday Party)
Abdul wore a hoop earring in his left ear. (TV: The Church on Ruby Road [+]Doctor Who Christmas Special 2023 (BBC One and Disney+, 2023).)
A psychic earring was a special type of earring that granted the user certain abilities. (TV: Rogue [+]Kate Herron and Briony Redman, Doctor Who series 14 (BBC One and Disney+, 2024).)