Green’s Dictionary of Slang

mod n.2

[abbr. SE modernist]

1. a member of a teenage cult orig. c.1961, who wore smart clothes, rode motor scooters and fought their main rivals, the motorcycle-riding, leather-clad ‘rockers’.

New Left Rev. Sept./Oct. 4/2: Teds and Mods, Beatniks and Ravers.
[UK]T. Keyes All Night Stand 22: Gin and orange is out this year [...] It’s port and lemon for fashionable little mods.
[UK]Sun. Times Mag. ‘The Pictures You Missed’ Nov. 43: Latest youth cult: the New Mods. Kids have resuscitated the pimpled peaock vanities of the ‘old’ mods of the mid-Sixties.
[UK]J. Sullivan ‘Big Brother’ Only Fools and Horses [TV script] So while all the other Mods were having punch-ups down at Southend and going to the Who concerts, I was at home baby-sitting!
[Ire]R. Doyle Commitments 100: The audience was dancing, a lot of them, little mods and modettes, shaking, turning in time together.
[UK]Guardian Guide 14–20 Aug. 15: Give him some amphetamines and a scooter and he’s a mod.
[UK]Z. Smith White Teeth 23: Ryan fancied himself as a bit of a Mod.
[UK]K. Richards Life 74: Brian, who was the archetypical mod [...] may have single-handedly started the mod movement [...] He was one of the first to go to the lyceum and get the mod gear.

2. attrib. use of sense 1.

[UK]Oz 3 5/2: Paisley shirts and pre mod western levi jackets.
[UK]T. Blacker Fixx 109: Jostling idiots in mod regalia.
[UK]Guardian G2 18 Feb. 11: Of course, ‘mod’ always did mean modern, but who’d have thought a movement that started in the 60s could look so right for now.

3. (Aus.) one who discards the conventional past and looks to the future.

[UK]R.D. Magoffin We Bushies 23: Most publications, what sad change, / Also no longer care [...] They’re more impressed by purple gods / And hefted dinosaurs / Composed by scruffy, bearded mods / With new poetic laws!

4. (US campus) a well-dressed, fashionable person.

[US]Baker et al. CUSS.

In derivatives