Green’s Dictionary of Slang

(orig. Aus.) be quiet! shut up! wait!

1938		X. Herbert Capricornia (1956) 139: Hey — edge it, Mum!
1949		H.C. Bosman Cold Stone Jug (1981) II 44: Singing softly, five or six men in a corner, and one man standing a little distance off to say ‘Edge that’ when a warder comes too near.
1970		(con. 1941) R. Beilby No Medals for Aphrodite 156: ‘Edge it, Harry,’ Turk snapped.
2001		D. Looser Boobslang [U. Canterbury D.Phil. thesis] 64/2: edge! int. wait, hang on, take it easy.
2020		G. Armstrong Young Team 122: ‘Edge it, mate. There’s the fuckin screws!’.