1. a suit made from a fabric with very thin stripes;
2. a fabric with very thin stripes;
3. a very thin stripe (especially a white stripe on a dark fabric);
WordNet (r) 3.0 (2006):
pinstripe
n 1: a suit made from a fabric with very thin stripes
2: a fabric with very thin stripes
3: a very thin stripe (especially a white stripe on a dark
fabric)