- OD⇄noun 1. an overdose of a narcotic.
2. a person who has taken such an overdose.
Ex. ""When I was shooting up ... I liked to hear about the ODs, and I'd think I was brave for taking it"" (Time). - OD⇄O.D. orOD(no periods),
an abbreviation for the following:
1. officer of the day.
2. olive drab (uniform).
3. ordinary seaman.
4. (Banking.)
a. overdraft;
b. overdrawn.
5. Doctor of Optometry. - OD⇄OD, noun, pl.OD'sorODs,verb, OD'd,OD'ing.
(Slang.) - od⇄od, noun.
an imaginary force formerly believed to pervade all nature and to manifest itself in magnetism, mesmerism, chemical action, and other effects. - OD⇄v.i. to become sick or die from an overdose of a narcotic.