OB adjective 4noun 7 adjective4 •Initialism of out of bounds. •Abbreviation of obstetric. •Abbreviation of obligatory (as in "ob. link" on Usenet) (see ObLink at c2.com; see also ob-) •Abbreviation of Old Babylonian. noun7 •Abbreviation of obstetrician.One woman in ten is at risk — yet one-third of all women over 50 have never had a mammo! By making Pap tests routine, OBs and GYNs have saved many lives. — 1989 •Abbreviation of obstetrics. •Initialism of outside broadcast. •Initialism of outside broadcasting. •Initialism of old boy (a male graduate; also a CB radio operator's term of address for a male). •Initialism of Olympic best. •Abbreviation of Old Babylonian.
