Green’s Dictionary of Slang

Mother Machree n.

(Aus.) tea.

2002

Pete’s Aussie Sl. Home Page 🌐 Mother Machree: tea.

In derivatives

Mother Machree-ish (adj.) (also Mother McCrea, ...McCree)

(Irish) mawkish, lachrymose, banal.

c.1943		‘Bill O. Lading’ You Chirped a Chinful!! n.p.: Mother McCree: sad story for an alibi.
1944		P. Kendall Dict. Service Sl. n.p.: a Mother McCrea . . . a sad story for an alibi.
1993		S. Dunne Cork Anthol. 238: At the vulgar end of the spectrum the Irish songs were ‘stage’ or syrupy, or Mother Machree-ish, brought home by returned Yanks .