Meaning

noun a United States youth subculture of the 1950s; rejected possessions or regular work or traditional dress; for communal living and psychedelic drugs and anarchism; favored modern forms of jazz (e.g., b

noun a regular route for a sentry or policeman

noun the rhythmic contraction and expansion of the arteries with each beat of the heart

originClipping of Beatrice or Beatrix + -s (hypocoristic suffix).

Etymology from Wiktionary, CC BY-SA 3.0