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Old English slim "slime," from Proto-Germanic *slimaz (cf. Old Norse slim, Old Frisian slym, Dutch slijm "slime, phlegm," German Schleim "slime"), probably related to Old English lim "birdlime; sticky substance," from PIE root *(s)lei- "slimy, sticky, slippery" (cf. Sanskrit linati "sticks, stays, adheres to; slips into, disappears;" Russian slimak "snail;" Old Church Slavonic slina "spittle;" Old Irish sligim "to smear," leinam "I follow," literally "I stick to;" Welsh llyfn "smooth;" Greek leimax "snail," limne "marsh, pool, lake," alinein "to anoint, besmear;" Latin limus "slime, mud, mire," linere "to daub, besmear, rub out, erase"). As an insult to a person from mid-15c. Slime-mold is from 1880.
"to cover with slime," 1620s, from slime (n.). Related: Slimed; sliming.
(Gen. 11:3; LXX., "asphalt;" R.V. marg., "bitumen"). The vale of Siddim was full of slime pits (14:10). Jochebed daubed the "ark of bulrushes" with slime (Ex. 2:3). (See PITCH.)
viscous fluid that moistens, lubricates, and protects many of the passages of the digestive and respiratory tracts in the body. Mucus is composed of water, epithelial (surface) cells, dead leukocytes, mucin, and inorganic salts. Mucus is produced by mucous cells, which are frequently clustered into small glands located on the mucous membrane that lines virtually the entire digestive tract. Large numbers of mucous cells occur in the mouth, where mucus is used both to moisten food and to keep the oral membranes moist while they are in direct contact with the air. Mucus in the nose helps to trap dust, bacteria, and other small inhaled particles. The stomach also has large numbers of mucous cells. Gastric mucus forms a layer about one millimetre thick that lines the stomach, protecting the organ from highly acidic gastric juice and preventing the juice from digesting the stomach itself.