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The Collaborative International Dictionary of English v.0.48 (gcide)

Cochineal \Coch"i*neal\ (k[o^]ch"[i^]*n[=e]l; 277), [Sp.
cochinilla, dim. from L. coccineus, coccinus, scarlet, fr.
coccum the kermes berry, G. ko`kkos berry, especially the
kermes insect, used to dye scarlet, as the cochineal was
formerly supposed to be the grain or seed of a plant, and
this word was formerly defined to be the grain of the
{Quercus coccifera}; but cf. also Sp. cochinilla wood louse,
dim. of cochina sow, akin to F. cochon pig.]
A dyestuff consisting of the dried bodies of females of the
{Coccus cacti}, an insect native in Mexico, Central America,
etc., and found on several species of cactus, esp. {Opuntia
cochinellifera}.
[1913 Webster]

Note: These insects are gathered from the plant, killed by
the application of heat, and exposed to the sun to dry.
When dried they resemble small, rough berries or seeds,
of a brown or purple color, and form the cochineal of
the shops, which is used for making carmine, and also
as a red dye.
[1913 Webster]

Note: Cochineal contains as its essential coloring matter
carminic acid, a purple red amorphous substance which
yields carmine red.
[1913 Webster]

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