The Collaborative International Dictionary of English v.0.48:
Lime \Lime\, n. [AS. l[imac]m; akin to D. lijm, G. leim, OHG.
l[imac]m, Icel. l[imac]m, Sw. lim, Dan. liim, L. limus mud,
linere to smear, and E. loam. [root]126. Cf. Loam,
Like the lime
That foolish birds are caught with. --Wordsworth.
2. (Chem.) Oxide of calcium, CaO; the white or gray,
caustic substance, usually called quicklime, obtained by
calcining limestone or shells, the heat driving off carbon
dioxide and leaving lime. It develops great heat when
treated with water, forming slaked lime, and is an
essential ingredient of cement, plastering, mortar, etc.
[1913 Webster +PJC]
Note: Lime is the principal constituent of limestone, marble,
chalk, bones, shells, etc.
Caustic lime, Calcium hydroxide or slaked lime; also, in a
less technical sense, calcium oxide or quicklime.
Lime burner, one who burns limestone, shells, etc., to make
Lime pit, a limestone quarry.
Lime rod, Lime twig, a twig smeared with birdlime; hence,
that which catches; a snare. --Chaucer.