Old English pricel "thing to prick with, instrument for puncturing; goad; small sharp point," from the same source as Old English prician (see prick (v.)) with instrumental suffix -el (1). Compare Middle Low German prickel, Dutch prikkel. From mid-15c. as "point or thorn of a plant," later also used of animal spines.
early 12c., "small monastery, subordinate monastery" (from Medieval Latin in this sense), later "small room for a monk or a nun in a monastic establishment; a hermit's dwelling" (c. 1300), from Latin cella "small room, store room, hut," related to Latin celare "to hide, conceal" (from PIE root *kel- (1) "to cover, conceal, save").
From "monastic room" the sense was extended to "prison room" (1722). The word was used in 14c., figuratively, of brain "compartments" as the abode of some faculty; it was used in biology by 17c. of various cavities (wood structure, segments of fruit, bee combs), gradually focusing to the modern sense of "basic structure of all living organisms" (which OED dates to 1845).
Electric battery sense is from 1828, based on the "compartments" in very early types. The meaning "small group of people working within a larger organization" is from 1925. Cell-body is from 1851, cell-division from 1846, cell-membrane from 1837 (cellular membrane is by 1732), cell wall is attested from 1842.
1510s, "to prick slightly," from prickle (n.). By 1855 as "to cause a prickling sensation in." Related: Prickled; prickling.
first element in many Celtic place names, meaning "cell (of a hermit); church; burial place," from Gaelic and Irish -cil, from cill, gradational variant of ceall "cell, church, burial place," from Latin cella (see cell).
c. 1400, "backbone," later "thornlike part" (early 15c.), from Old French espine "thorn, prickle; backbone, spine" (12c., Modern French épine), from Latin spina "backbone," originally "thorn, prickle" (figuratively, in plural, "difficulties, perplexities"), from PIE *spe-ina-, from root *spei- "sharp point" (see spike (n.1)). Meaning "the back of a book" is first attested 1922.