What does "O.D." mean in this context in "Revolutionary Road" by Richard Yates?
O.D. stands for "Olive Drab":
olive drab
1: a grayish olive
2a: a wool or cotton fabric of an olive drab color
b: a uniform of this fabric
Merriam-Webster
This was typically used in fatigues (work or battle uniforms) for U.S. troops in the 20th century.
