Initialism of Office of Bilingual Education. / (US politics, historical) Initialism of Office of Business Economics, now BEA. / Initialism of Oregon Board of Education.

Abbreviation of obsolete (as a gloss for words in dictionaries) / Abbreviation of observed

Obsolete form of obeah.

(music) Abbreviation of oboe.

Abbreviation of obstetrics.

(historical) a halfpenny

(archaic) an objection / (genetics) the obese gene

A river in Russia; the westernmost of the three great Siberian rivers.

(category theory) The set of objects of a category.

(non-productive) Against; facing; a combining prefix found in verbs of Latin origin. / (botany) Of a reversed shape.