Od or Odd (ŏd) interj. Archaic Used as a mild oath. [Alteration of God.] OD 1 (ō′dē′) Slang intr.v. OD’ed, OD’·ing, OD’s 1. To take an overdose: OD’ed on barbiturates. 2. To have or experience too much of something; overindulge: OD’ed on ice cream. n. 1. An overdose of a drug. 2. One who has taken an overdose. [o(ver)d(ose).] OD 2 abbr. 1 …

