1. (adj.)thin having relatively little extent from one surface to the opposite: thin ice.
2. thin of small cross section in comparison with the length: a thin wire.
3. thin having little flesh; lean: a thin man.
4. thin composed of objects widely separated; sparse: thin vegetation.
5. thin scant.
6. thin of relatively slight consistency: thin soup.
7. thin rarefied, as air.
8. thin lacking solidity; flimsy: a thin excuse.
9. thin lacking volume; weak and shrill: a thin voice.
10. thin lacking force or a sincere effort: a thin smile.
11. thin lacking body or richness: a thin wine.
12. thin of light tint.
13. thin (of a photographic negative) lacking in contrast through underdevelopment or underexposure.
14. (adv.)thin in a thin manner.
15. thin sparsely; not densely.
16. thin so as to produce something thin: ham sliced thin.
17. (v.t.)thin to make thin or thinner (often fol. by down or out).
18. (v.i.)thin to become reduced or diminished (often fol. by down, out, or off): The crowd thinned out.
Etymology: (bef. 900; ME thyn(ne), OE thynne, c. OFris thenne)
Definition of 'thin'
Princeton's WordNet
1. (adj)thin of relatively small extent from one surface to the opposite or in cross section "thin wire"; "a thin chiffon blouse"; "a thin book"; "a thin layer of paint"
2. (adj)thin, lean lacking excess flesh "you can't be too rich or too thin"; "Yon Cassius has a lean and hungry look"-Shakespeare
3. (adj)slender, thin very narrow "a thin line across the page"
4. (adj)sparse, thin not dense "a thin beard"; "trees were sparse"
5. (adj)thin relatively thin in consistency or low in density; not viscous "air is thin at high altitudes"; "a thin soup"; "skimmed milk is much thinner than whole milk"; "thin oil"
6. (adj)thin (of sound) lacking resonance or volume "a thin feeble cry"
7. (adj)thin lacking spirit or sincere effort "a thin smile"
8. (verb)flimsy, fragile, slight, tenuous, thin lacking substance or significance "slight evidence"; "a tenuous argument"; "a thin plot"; a fragile claim to fame"
9. (verb)thin lose thickness; become thin or thinner
10. (verb)thin make thin or thinner "Thin the solution"
11. (verb)dilute, thin, thin out, reduce, cut lessen the strength or flavor of a solution or mixture "cut bourbon"
12. (adverb)reduce, melt off, lose weight, slim, slenderize, thin, slim down take off weight
13. (adverb)thinly, thin without viscosity "the blood was flowing thin"
1. (adjective)thin ≠ thick a dress made of thin material; Cut the slices thin.
2. thin ≠ fat, overweight She looked pale and thin.; a tall, thin man
3. thin ≠ thick His hair was getting thin on top.
4. thin ≠ thin The soup was a little thin.
5. thin not large in size or amount Trading on the stock market was thin.; She won by a thin margin.
6. thin (of air) not containing much oxygen at 20,000 feet where the air is thin
7. thin out of thin air/into thin air emphasizes that sth appears or disappears quickly Suddenly, out of thin air, there was food for everyone.
8. (verb)thin to become smaller in size or number The crowd began to thin out.; Her hair is thinning.
9. thin to make a liquid thinner Thin the sauce with some wine.
10. (adverb)thin in thin pieces; = thinly I like the meat sliced thin.
Definition of 'thin'
Webster Dictionary
1. (adverb)thin not thickly or closely; in a seattered state; as, seed sown thin
2. thin having little thickness or extent from one surface to its opposite; as, a thin plate of metal; thin paper; a thin board; a thin covering
3. thin rare; not dense or thick; -- applied to fluids or soft mixtures; as, thin blood; thin broth; thin air
4. thin not close; not crowded; not filling the space; not having the individuals of which the thing is composed in a close or compact state; hence, not abundant; as, the trees of a forest are thin; the corn or grass is thin
5. thin not full or well grown; wanting in plumpness
6. thin not stout; slim; slender; lean; gaunt; as, a person becomes thin by disease
7. thin wanting in body or volume; small; feeble; not full
8. thin slight; small; slender; flimsy; wanting substance or depth or force; superficial; inadequate; not sufficient for a covering; as, a thin disguise
9. (verb)thin to make thin (in any of the senses of the adjective)
10. (verb)thin to grow or become thin; -- used with some adverbs, as out, away, etc.; as, geological strata thin out, i. e., gradually diminish in thickness until they disappear
Definitions of thin 
Afrikaans: dun
Arabic: رَقيق، رَفيع
Bulgarian: тънък
Brazilian: fino
Czech: tenký, slabý
German: dünn
Danish: tynd
Greek: λεπτός, ψιλός
Spanish: fino
Estonian: õhuke
Farsi: نازک
Finnish: ohut
French: mince
Hebrew: דַק
Hindi: पतला
Croatian: tanak
Hungarian: vékony
Indonesian: tipis
Icelandic: þunnur
Italian: sottile
Japanese: 薄い
Korean: 얇은
Lithuanian: plonas
Latvian: plāns
Malay: tipis
Dutch: dun
Norwegian: tynn; spinkel
Polish: cienki
Portuguese: fino
Romanian: subţire
Russian: тонкий
Slovak: tenký
Slovenian: tenek
Serbian: tanak
Swedish: tunn
Thai: บาง
Turkish: zayıf, ince
Taiwanese: 薄的
Ukrainian: тонкий
Urdu: پتلا، باريک
Vietnamese: mỏng
Chinese: 薄的
