As an adjective undergrown
is insufficiently grown; not having grown to a normal or suitable size.
As a noun undergown is
a gown worn under another, or under some other article of dress.
undergrown
English
Adjective
(-)
insufficiently grown; not having grown to a normal or suitable size.
undergown
English
Noun
(
en noun)
A gown worn under another, or under some other article of dress.
- An undergown and kirtle of pale sea-green silk. — Sir Walter Scott.