fly-up
[flahy-uhp]
noun
a formal ceremony at which a girl leaves her Brownie troop, receives a pair of embroidered wings for her uniform, and becomes a member of an intermediate Girl Scout troop.
Origin of fly-up
noun use of verb phrase fly up
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019