a framework, stand, or grating on which articles are placed
a bar with teeth on one face for meshing with a pinion or worm gear
(the rack) an instrument of torture formerly used to stretch the victim's body
a framework for holding fodder for livestock
a triangular frame used for arranging pool balls at the beginning of the game
a single game of pool
NAmer, informal a bed, or sleep
on the rack
under great mental or emotional stress
So much had her nerves been on the rack for her patron's safety — Scott
[Middle English, prob from early Dutch rec framework]