Arm

An arm was a body part.

Vislor Turlough and his brother Malkon each had the Misos Triangle branded on an arm. (TV: Planet of Fire)

According to Faction Paradox legend, Grandfather Paradox had only one arm. (PROSE: The Gallifrey Chronicles) A future version of the Eighth Doctor whose biodata had been corrupted by the Faction modelled himself as Grandfather Paradox, including removing one of his arms. This also may have been because he knew it was the arm which the Doctor would use to destroy Gallifrey. (PROSE: The Ancestor Cell)

A way that some people reminded themselves that they had encountered the Silence was to make tally marks on their arms. (TV: Day of the Moon)

Auntie had the Corsair's left arm grafted onto her by House. (TV: The Doctor's Wife)