noun. the branch of medicine dealing with childbirth and care of the mother.
- medical specialty
- over-the-counter medicine
- over-the-counter drug
- prescription drug
noun. a major river of western Siberia; flows generally northward and westward to the Gulf of Ob and the Kara Sea.
- Ob River
Example sentences of the word ob
If you're applying for a job with the federal government for example, by lying on a ob application you can be committing a felony.