Abbreviation of Rhesus factor.

plural of fact checker

A protein present in endothelia and leukocytes. Classified as CD142. It plays a primary role in the blood clotting process by the initiation of thrombin formation.

(colloquial, archaic) To (prepare to) be very brazen or impudent.

(nautical, slang, obsolete) A sailor.

(archaic) Lily-livered; cowardly.

simple past tense and past participle of face out

present participle of face out

(politics, historical) The political programme of mild democratization and liberalization, established in socialist Czechoslovakia in 1968, that led to the Prague Spring.

(gay slang and African-American Vernacular) To apply makeup. / Used other than figuratively or idiomatically: see beat, face.