adverb/ɑ̃ ɡaʁ.sɔ̃/
like a boy or young man; like a bachelor
“Vne ieune fille aimée par vn homme docte (ce ſont ſes mots) vint auec luy en Athenes, habillé en garçon: […]” — A young girl loved by a learned man (these are his words) came with him to Athens, dressed as a boy: […]
Compound of en + garçon.