Green’s Dictionary of Slang

ridge adj.

[ridge n. (1)]

1. (UK Und.) golden.

[UK]Sheffield Indep. 7 Aug. 5/2: The officer explained that ‘norah owlers’ and ‘ridge quiz’ signified golden eye-glasses.
[US]Ladies’ Repository (N.Y.) Oct. VIII:37 317/1: Ridge Blunt, See Blunt.
[UK]Leaves from Diary of Celebrated Burglar 20/2: It happened just then that Tommy was in want of a ‘ridge thimble,’ he having blowed his last one in France.

2. (Aus.) valuable, good.

[UK]Partridge DSUE (1984) 975/1: since ca. 1930.
[Aus]Williamstown Chron. (Vic.) 15 Apr. 2/3: ‘Remember, folks, the heading of this column (They Say), and what they say in my hearing and I check up on is ‘ridge’ (right) .
[Aus]Mirror (Perth) 13 Aug. 6/3: With all the galahs and dills that’ll drag in this yike, it’d be ridge to have someone who’s a wake-up to yabber with.
[Aus]K. Tennant Joyful Condemned 4: ‘What’s the idea?’ Hector demanded. ‘It’s ridge, Hec,’ she assured him. ‘He won’t come here again.’.
[Aus] ‘Whisper All Aussie Dict.’ in Kings Cross Whisper (Sydney) xxxix 4/4: ridge or ridgery didge: True for real.
[Aus]D. Ireland Unknown Industrial Prisoner 130: I convinced her the whole thing was ridge!