"hemorrhoids," early 15c., from Medieval Latin pili "piles," which is of uncertain origin, perhaps from Latin pila "ball" (see pill (n.)) and so called from shape.
Spanish, diminutive of Venecia "Venice" (see Venice). Supposedly the name was given by Spanish sailors in 1499 when they saw a native village built on piles on Lake Maracaibo. Related: Venezuelan.
early 14c., "to pile up (grain) into a stack," from stack (n.). Meaning "arrange (a deck of cards) unfairly" (in stack the deck) is first recorded 1825. Stack up "compare against" is 1903, from notion of piles of poker chips (1896). Of aircraft waiting to land, from 1941. Related: Stacked; Stacking.
*kaə-id-, Proto-Indo-European root meaning "to strike."
It forms all or part of: abscise; avicide; biocide; caesarian; caesura; cement; chisel; -cide; circumcise; circumcision; concise; decide; decision; deicide; excise (v.); excision; felicide; feticide; filicide; floricide; fratricide; fungicide; gallinicide; genocide; germicide; herbicide; homicide; incise; incision; incisor; infanticide; insecticide; legicide; liberticide; libricide; matricide; parricide; patricide; pesticide; precise; precision; prolicide; scissors; senicide; spermicide; suicide; uxoricide; verbicide.
It is the hypothetical source of/evidence for its existence is provided by: Sanskrit skhidati "beats, tears;" Latin caedere "to strike down, fell, slay;" Lithuanian kaišti "shave;" Armenian xait'em "to stab;" Albanian qeth "to shave;" Middle Dutch heien "to drive piles," Old High German heia "wooden hammer," German heien "beat."