n. Something with a streamlined design, especially railroad locomotives and passenger equipment.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. a streamlined train
Word Usage
"When I was twelve I sat in the streamliner alone with a shoebox of sandwiches and deviled eggs my mother made, and ate everything right away as I headed north by the Sound where the trestles of derelict trolley lines roosted nations of seagulls."