A daughter was a female offspring to her parents. The male equivalent was a son. (TV: An Unearthly Child et al.)
After her death, the First Doctor said that he would always remember Katarina as one of the daughters of the Gods. (TV: The Daleks' Master Plan)
The Tenth Doctor unwillingly had a daughter named Jenny when his DNA was extracted during the Human-Hath War on the planet Messaline by a progenation machine. After initially appearing to have been killed by a gunshot wound, she survived and went on to explore the universe like her ''father''. Despite being the only other known member of the Doctor's species, she did not regenerate. (TV: The Doctor's Daughter)
