subs. (rhyming slang).A room.
LIKE A BIRCH-BROOM IN A FIT, phr. (common).Said of a rough, towzly head.
1876. C. HINDLEY, ed. The Life and Adventures of a Cheap Jack, 90. I should like to know what looks worse than to see a young man or woman with their hair in an uproar, like a BIRCH-BROOM IN A FITand some of you chaps down there look as if you hadnt had your hair combed since last reaping-time, when you did it with a field-rake, which is very harrowing to ones feelings.