A bowel obstruction.

One who practices obstetrics; an obstetrician.

Alternative form of pseudoobstruction

A course with a series of physical challenges that one performs sequentially. / (figuratively) A painful and strenuous experience; hassle.

(proscribed) Synonym of obstinacy; Misspelling of obstinance.

(countable, medicine) A physician who is both an obstetrician and a gynecologist.

(chiefly UK) Race in which a competitor, traveling on foot, must overcome various physical challenges in the form of obstacles.

Abbreviation of obstetrics.