Farmers Slang & Its Analogues. 18901909, rev. 2022.
Morning-sneak
subs. (old).See quot.
1
1819. J. H. VAUX, Memoirs, Glossary. s.v. MORNING-SNEAK, going out early to rob private houses or shops by slipping in at the door unperceived, while the servant or shopman is employed in cleaning the steps, windows, &c.