Green’s Dictionary of Slang

morrie n.1

[ety. unknown; ? a nonce-creation by Cook, in The Crust on its Uppers (1962), who defines it as ‘reverse of Slag’ and slag as ‘young third-rate grafters, male or female, unwashed, useless’]

a sharp young person, eyes on the main chance and willing to take risks to achieve what they want.

Show quotations
[UK]R. Cook Crust on its Uppers 15: The other two morries you’ll meet are the same as me, same background, same drives.
R. Cook memoir in Sinclair London: City of Disappearances (2006) 56: Well, how’s it going, Morrie?