Proper noun
the Old Firm
(soccer) Collectively, the two Scottish football teams Rangers and Celtic, both based in Glasgow, which are the most successful teams in Scotland. They have a fierce and long-standing rivalry.
Whether people like it or not, you have to say the Old Firm are a major part of Scottish football. I know there is a lot of resentment from other clubs about that, but it's a fact. Walter Smith
I've always been mentally tough. Believe me, you have to be that way when you've been an Old Firm player living in Glasgow. Charlie Adam
If that was the end of Rangers and Celtic and if that was the end of the big game that started in 1888 (the first Old Firm meeting) all the way to 2012 - we won that game. Source: Internet
Morelos is currently suspended after his Old Firm sending off last month and has netted 28 goals for club and country in all competitions this season. Source: Internet
Ian Durrant insists Rangers and Celtic colts would add value to lower leaguesFormer Ibrox star has backed the proposal to allow Old Firm B teams into the bottom division. Source: Internet
The Old Firm derby at Ibrox on March 13 was on the first Premiership card to be postponed due to the coronavirus pandemic and, as such, would be a curtain raiser for any resumption of the current campaign. Source: Internet