“He went to’ds de back, ma’am.” The negro opened the door and slid his legs, clad in army O.D. and a pair of linoleum putties, to the ground. “‘I’ll go git ’im.”’ 1964 [1929], William Faulkner, Sartoris (The Collected Works of William Faulkner), London: Chatto & Windus, page 22:
(Australia, abbreviation, alt-of, countable, initialism, qualifier:on road signs, uncountable) Initialism of over dimension, used on route numbers for large vehicles, and normally followed by a numeral, e.g. OD5.
She told me she'd love me and I told her I'd do the same / Then I OD'd in Denver and I just can't remember her name 1979, Hank Williams Jr., “O.D.'d in Denver”, in Whiskey Bent and Hell Bound:
‘My brother,[…], is at Radley, on account of my parents thinking it a bad idea to have us both at the same school.’
‘On account of your being twins?’ said Adrian.
‘Right, on account of my mother OD-ing on fertility drugs.[…]’ 1991 September, Stephen Fry, chapter 1, in The Liar, London: Heinemann, →ISBN, section I, pages 18–19: