seagulling noun3 •(UK, slang) The practice, in Rugby Union, of forwards running in the back line rather than concentrating on their primary positional duties in open play (see rugby union positions).As long as he can stay away from the seagulling in the tight games. — 2002 •(New-Zealand) The practice of working as a non-union casual stevedore.Sometimes I went down to the Wellington wharves for what was called 'seagulling', where I joined a crowd of other men just before 8 a.m., hoping to be given the nod for a day's work. — 1995 •The practice of using a British Seagull outboard.I'm going take the boat out and do some seagulling.