the.com/rack

a frame that holds your stuff and a word that holds your nightmares.

means A framework of bars, shelves, or pegs for holding or storing things — though the same word also names a medieval torture device that stretched the body, a horse's gait, and the act of straining or tormenting (as in 'rack your brain').

from From Middle Dutch or Middle Low German 'rec' or 'recke,' meaning a framework or bar, related to a Germanic root for 'to stretch' (a cousin of 'reach'). That stretching sense is the dark thread connecting the storage frame to the torture engine — both involve things pulled taut over a structure. The phrase 'rack one's brains' borrows this image of straining painfully, while 'rack and ruin' is actually a different word, an old variant of 'wrack' (wreckage), often confused with this one.

medieval torture: stretched victims until joints dislocated
billiards: the triangle that starts every break
to rack: means to torment, born from the device
server rack: measured in mysterious units called U
antlers: hunters call a deer's headgear its rack

for instance

rack at wimbledon — tennis racket used at the all england club since 1877

spice rack — kitchen storage found in most homes, holds 6-12 jars

roof rack — carrier on cars like the thule system, adds 50+ lbs capacity