day boy

a male boarding-school student who lives at home.

Origin of day boy

First recorded in 1840–50

“I wonder where the day-boy cads go for their tucks,” said Trimble in an audible voice, evidently intended for the opposition.

Tom, Dick and Harry |Talbot Baines Reed
He, too, was a day-boy, whose people lived in a suburb of the town which lay upon my road.

Lore of Proserpine |Maurice Hewlett
My father had striven his utmost to get me taken as a day-boy, or at any rate to be allowed to keep a book against the Muses.

The Remarkable History of Sir Thomas Upmore, bart., M.P., formerly known as "Tommy Upmore" |R. D. Blackmore
In this day-boy row that has just started he's gone for my cousin.

The Longest Journey |E. M. Forster

Into the story at this point comes the narrative of Charles Mereweather Cook, aged fourteen, a day-boy.

The Gold Bat |P. G. Wodehouse