(medicine) Observation(s) (blood pressure, temperature, etc).

(slang) police observation / An observation hut.

plural of ob

plural of obelus

(in listing dates of death) Died.

Incidentally.

(music) Oboe(s).

The son of Ruth and Boaz, father of Jesse and grandfather of David, grandson of Naomi. / A male given name from Hebrew of biblical origin.

(uncountable, informal, medicine, initialism, acronym) Obstetrics and gynecology. / (countable, initialism, acronym) A physician in these specialties; an obstetrician-gynecologist.

the study or field of obstetrics and gynaecology / a physician in obstetrics and gynaecology