Definition of lo in English:

lo

exclamation

archaic
  • Used to draw attention to an interesting or amazing event:

    ‘and lo, the star, which they saw in the east, went before them’

Origin

Natural exclamation: first recorded as lā in Old English; reinforced in Middle English by a shortened form of loke ‘look!’, imperative of look.

Pronunciation

lo

/ləʊ/