Definition of bagsy in English:

bagsy

verb

[WITH OBJECT]informal
  • Succeed in securing (something) for oneself.

    ‘I'd managed to bagsy the front seat’
    • ‘Mine's a pint of vodka, and bagsy the first ambulance.’
    • ‘This isn't the first time Louis has attempted to bagsy this particular badge.’
    • ‘I'd managed to 'bagsy' the front seat!’
    • ‘Up against the wall with the lot of them, and bagsy first go on the machinegun.’
    • ‘I'm thinking of bunk beds and bagsy the top one!’
    • ‘And then the people who didn't have the foresight to bagsy a place arrive late and insist in guilt-stricken tones than everyone must move up and be squashed for them.’

Origin

1950s: representing a pronunciation of bags I.

Pronunciation

bagsy

/ˈbaɡzi/