noun

1. birdlime
2. a white substance, calcium oxide, CaO, obtained by the action of heat on limestone, shells, and other material containing calcium carbonate, and used in making mortar and cement, and, when hydrated, in neutralizing acid soil
3. a calcareous deposit from water inside pipes, pans, etc.

Etymology: ME < OE līm, akin to Ger leim < IE base *(s)lei-, slime, wet and sticky, to smooth over > Gr leios, smooth, L limus, slime, mud, linere, to smear, levis, smooth, OE lam, clay

transitive verb limed, liming lim′·ing

1. to cement
2. to smear with birdlime
3. to catch with or as with birdlime
4. to apply lime to; treat with lime