
Bets placed outside the Roulette table's numbered grid. These include bets on red, black, high, low, odd, even, and the first, second and third sets of 12 numbers.
Found on
http://www.encyclo.co.uk/local/21637

In Roulette, a bet placed on the outside of the table in which 12 or 18 numbers are bet on at a time. Opposite of Inside Bet.
Found on
http://www.gamblingplanet.org/Gambling-Glossary-O

when a player bets with even money (for example black/red, high/low, odd/even) and the payout is 1:1
Found on
https://www.encyclo.co.uk/local/21325
No exact match found.