lo
exclamation
[ ləʊ ]
• 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.
LO
noun
• a person's young son or daughter (particularly used in online forums).
• "my LO doesn't nap during the day"
Origin:
early 21st century: abbreviation of little one .