He slept in an upright position in a custom armchair, so the reasons for his lying down to sleep are open to speculation.
It feels a bit like walking through a bad neighborhood—one where if you break some custom you're unaware of, you could get hurt.
For most of history, the subordination of wives to husbands was enforced by law and custom.
The bride reportedly wore a custom Chantilly lace mermaid gown by Carolina Herrera.
As is his custom, he has harsh words for those on all sides of the debate.
Do your work honestly and thoroughly, even though it be the custom to do otherwise.
This colonelcy was an honorary title which he held by custom rather than by law.
It was this lady's custom to walk among her flowers and fruit trees.
The ethics of Shinto were all included in conformity to custom.
It was an outrage on Oriental custom; and as such the narrative sets it before us.
c.1200, "habitual practice," from Old French costume "custom, habit, practice; clothes, dress" (12c., Modern French coutume), from Vulgar Latin *consuetumen, from Latin consuetudinem (nominative consuetudo) "habit, usage, way, practice, tradition, familiarity," from consuetus, past participle of consuescere "accustom," from com-, intensive prefix (see com-), + suescere "become used to, accustom oneself," related to sui, genitive of suus "oneself," from PIE *swe- "oneself" (see idiom). Replaced Old English þeaw. Sense of a "regular" toll or tax on goods is early 14c. The native word here is toll.
"made to measure or order," c.1830, from custom (n.).