noun

• (orthography) The symbol ̼, which combines under a letter as a sort of accent.
• (UK, slang) A fan or member of Brighton and Hove Albion Football Club.

verb

• (British, Australia, New Zealand, rugby slang, of a forward) To run in the back line rather than concentrate on primary positional duties in open play.
  "[…] and when you need cover for the fullback because of the bombs raining down, when the walking maul requires every forward to quit seagulling and actually do some hard graft, then the rest of the game opens up."
• (boating slang) To use a British Seagull outboard.
  "It should be considered a style of outboarding I believe. Seagulling arround^([sic]) and all."
• (New Zealand) To work as a non-union casual stevedore.
  "Bill had been seagulling on the wharf since he got back from the war."

noun

• (soccer) Someone connected with Brighton & Hove Albion Football Club, as a fan, player, coach etc.