n. A type of dress, borrowing details, such as a collar or button front, from a man's shirt.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a dress that is tailored like a shirt and has buttons all the way down the front
Word Usage
"First of all, it's a shirtdress, which is 50 "Erin Must Buy" points right there without even totaling up the extra points for the stripes, the standup collar, and the raglan sleeves."