c. 1300, "stumps of grain stalks left in the ground after reaping," from Old French estuble "stubble" (Modern French éteule), from Vulgar Latin *stupla, reduced form of Latin stipula "stalk, straw" (see stipule). Applied from 1590s to bristles on a man's unshaven face.
struthious
Struwwelpeter
strychnine
Stuart
stub
stubble
stubbly
stubborn
stubby
stucco
stuck