The story
Ultimately from camouflage, of camo plus the aspect marker up.
Etymology from Wiktionary, CC BY-SA 4.0.
camo up
Today it means: To put on clothing, make-up, etc. with a camouflage pattern, to wear camouflage. Full definition →
Today it means: To put on clothing, make-up, etc. with a camouflage pattern, to wear camouflage. Full definition →
Ultimately from camouflage, of camo plus the aspect marker up.
Etymology from Wiktionary, CC BY-SA 4.0.