bolsterless

English

Etymology

From bolster +‎ -less.

Adjective

bolsterless (not comparable)

1. Without a bolster.
   • 1950 January, “British Railways Double-Deck Suburban Stock”, in Railway Magazine, page 57:

     Bolsterless trailer bogies have been used, incorporating in the construction laminated springs mounted on the axle boxes, and steel helical springs with auxiliary rubbers, thus maintaining the high standard of springing of the swing bolster bogies.