un·der·draw·ing noun \ˈən-dər-ˌdrȯ-iŋ\
: a preliminary sketch made on a surface (as a canvas or panel) prior to painting
First Known Use of UNDERDRAWING
Learn More About UNDERDRAWING
Seen & Heard
What made you want to look up underdrawing? Please tell us where you read or heard it (including the quote, if possible).