FCO, theFCO, the /ˌef siː ˈəʊ/ 
(the Foreign and Commonwealth Office) the British government department responsible for foreign affairs
(the Foreign and Commonwealth Office) the British government department responsible for foreign affairs- St Katharine's Dock
- St Kilda
- St Kitts-Nevis
- St Lawrence River
- St Lawrence Seaway
- St Leger
- St. Louis
- St Lucia
- St Lucian
- St Martin-in-the-Fields
- bossily
- bossiness
- bossy
- Boston
- Boston Globe, The
- Boston Massacre
- Boston Pops
- Boston Red Sox
- Boston Strangler
- Boston Tea Party
- bosun
- Boswell, James
- Bosworth Field
- bot
- botanical