Shed
late 15th century: apparently a variant of the noun shade.
wiktionary
From Middle English scheden, schede, from Old English scēadan, scādan(“to separate, divide, part, make a line of separation between; remove from association or companionship; distinguish, discriminate, decide, determine, appoint; shatter, shed; expound; decree; write down; differ”), from Proto-West Germanic *skaiþan, from Proto-Germanic *skaiþaną (compare West Frisian skiede, Dutch and German scheiden), from Proto-Indo-European *skeyt-(“to cut, part, divide, separate”), from *skey-.
See also Welsh chwydu(“to break open”), Lithuanian skėsti(“to spread”), skíesti(“to separate”), Old Church Slavonic цѣдити(cěditi, “to filter, strain”), Ancient Greek σχίζω(skhízō, “to split”), Old Armenian ցտեմ(cʿtem, “to scratch”), Sanskrit च्यति(cyáti, “he cuts off”)). Related to shoad, shit.
From Middle English sched, schede, schad, from a combination of Old English scēada(“a parting of the hair, top of the head”) and Old English ġesċēad(“distinction, reason”).
Dialectal variant of a specialized use of shade. [1]
etymonline
shed (n.)
"building for storage," 1855, earlier "light, temporary shelter" (late 15c., shadde), possibly a dialectal variant of a specialized use of shade (n.). Originally of the barest sort of shelter. Or from or influenced in sense development by Middle English schudde (shud) "a shed, hut."
shed (v.)
"cast off," Old English sceadan, scadan "to divide, separate, part company; discriminate, decide; scatter abroad, cast about," strong verb (past tense scead, past participle sceadan), from Proto-Germanic *skaithan (source also of Old Saxon skethan, Old Frisian sketha, Middle Dutch sceiden, Dutch scheiden, Old High German sceidan, German scheiden "part, separate, distinguish," Gothic skaidan "separate"), from an extended form of PIE root *skei- "to cut, split."
In reference to animals, "to lose hair, feathers, etc." recorded from c. 1500; of trees losing leaves from 1590s; of clothes, 1858. This verb was used in Old English to gloss Late Latin words in the sense "to discriminate, to decide" that literally mean "to divide, separate" (compare discern). Hence also scead (n.) "separation, distinction; discretion, understanding, reason;" sceadwisnes "discrimination, discretion." Related: Shedding. A shedding-tooth (1799) was a milk-tooth or baby-tooth.
