Definitions

1. verb

to march or walk out, especially in a group

“The crowd began to outroop from the auditorium.”

2. noun

a group of people marching out, especially in a ceremonial or ritual context

“The procession was led by the grand outroop of the ancient tribe.”

3. verb (archaic or poetic)

to exit or depart, often in a dignified or ceremonial manner

“The monarch outrooped the castle, leaving behind a trail of courtiers.”