Wiktionary
tradesman's entrance
n. 1 the entrance to a large house used by tradesmen to deliver goods and services; usually at the side or rear 2 (context slang English) the anus
Usage examples of "tradesman's entrance".
It was then that he saw five Vipers squatted in the small, unsheltered bay in front of the tradesman's entrance.
Now we flirt outrageously with his sombre dignity, and beings like these won't even let him in the tradesman's entrance.