What does the word ho mean in romeo and Juliet?

In William Shakespeare's Romeo and Juliet, the word "ho" is used as an interjection to attract someone's attention or to express surprise or excitement. For example, in Act II, Scene IV, Romeo calls out "Ho!" to Juliet as he approaches her balcony. In Act III, Scene I, Mercutio uses "ho" to express surprise when he sees Romeo approaching with a lantern. This usage of "ho" was common during Shakespeare's time and remains a colloquial term in certain contexts today.