Rim ‧ ing ‧ ton, Dame Stel ‧ la /ˈrɪmɪŋtən, ˈstelə/ BrE AmE
(1935–) a British political official who was the first woman director of ↑ MI5 (=part of the UK's secret service) from 1992 to 1998. When her name was announced, it was the first time that any information had ever been made public about MI5 and its management.