The winner was the last to flick a marble into the gully. A oner had to beat a fourer four times to win, a fourer had to beat a twelver three times, and so on.

May all your conkers be oners / May your love life fail with dishonours

The history of 'oners' becoming 'sixers' through successive victories[…]

Conkers so highly prized that it's a wonder they even manage to hit the ground before being swept away to be pickled or baked and then going on to new careers as 'oners', 'twoers', and so forth.

Oner

Meaning

Noun

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