1. (v.t.)scotch to put an end to; crush; foil: to scotch a rumor.
2. scotch to cut, gash, or score.
3. scotch to injure so as to make harmless.
4. scotch to block or prop with a wedge or chock.
5. (n.)scotch a cut, gash, or score.
6. scotch a block or wedge put under a wheel, barrel, etc., to prevent slipping.
7. (adj.)Scotch of Scottish origin; regarded as characteristic of Scotland or the Scottish people.
8. Scotch Sometimes Offensive.
9. Scotch (usu. l.c.) frugal; provident.
10. (n.)Scotch (used with a pl. v.) Sometimes Offensive. the inhabitants of Scotland; the Scots.
11. Scotch (often l.c.)
Etymology: (1585–95; syncopated var. of Scottish)
Definition of 'scotch'
Princeton's WordNet
1. (noun)score, scotch a slight surface cut (especially a notch that is made to keep a tally)
2. (adj)Scotch, Scotch whiskey, Scotch whisky, malt whiskey, malt whisky, Scotch malt whiskey, Scotch malt whisky whiskey distilled in Scotland; especially whiskey made from maltedbarley in a pot still
3. (adj)Scots, Scottish, Scotch of or relating to or characteristic of Scotland or its people or culture or its Englishdialect or Gaeliclanguage "Scots Gaelic"; "the Scots community in New York"; "`Scottish' tends to be the more formal term as in `The Scottish Symphony' or `Scottish authors' or `Scottish mountains'"; "`Scotch' is in disfavor with Scottish people and is used primarily outside Scotland except in such frozen phrases as `Scotch broth' or `Scotch whiskey' or `Scotch plaid'"
4. (verb)economical, frugal, scotch, sparing, stinting avoiding waste "an economical meal"; "an economical shopper"; "a frugal farmer"; "a frugal lunch"; "a sparing father and a spending son"; "sparing in their use of heat and light"; "stinting in bestowing gifts"; "thrifty because they remember the great Depression"; "`scotch' is used only informally"
5. (verb)thwart, queer, spoil, scotch, foil, cross, frustrate, baffle, bilk hinder or prevent (the efforts, plans, or desires) of "What ultimately frustrated every challenger was Ruth's amazing September surge"; "foil your opponent"
6. (verb)scotch make a small cut or score into
Definition of 'scotch'
Webster Dictionary
1. (adj)scotch of or pertaining to Scotland, its language, or its inhabitants; Scottish
2. (noun)scotch the dialect or dialects of English spoken by the people of Scotland
3. (noun)scotch collectively, the people of Scotland
4. (noun)scotch a chock, wedge, prop, or other support, to prevent slipping; as, a scotch for a wheel or a log on inclined ground
5. (noun)scotch a slight cut or incision; a score
6. (verb)scotch to shoulder up; to prop or block with a wedge, chock, etc., as a wheel, to prevent its rolling or slipping
7. (verb)scotch to cut superficially; to wound; to score
Definitions of scotch 
Afrikaans: beëindig
Arabic: يَضَعُ نِهايَةً لِ
Bulgarian: осуетявам
Brazilian: acabar com
Czech: zarazit
German: blockieren
Danish: gøre en ende på
Greek: θέτω τέλος, μπλοκάρω
Spanish: poner fin (a)
Estonian: lõppu tegema
Farsi: پايان دادن
Finnish: tehdä tyhjäksi
French: mettre finà
Hebrew: לָשִׂים קֵץ
Hindi: घायल कर देना, क्षत-विक्षत
Croatian: osujetiti
Hungarian: elvág
Indonesian: menghentikan
Icelandic: kveða niður
Italian: far cessare; mandare a mo
Japanese: つぶす
Korean: 꺾다
Lithuanian: sužlugdyti
Latvian: izbeigt; apspiest; apturē
Malay: mematahkan
Dutch: verijdelen
Norwegian: sette en stopper for, kve
Polish: udaremnić
Persian: پايان دادن
Pashto: سكاټلينډى، دسكاټلينډ
Portuguese: desfazer
Romanian: a stopa
Russian: положить конец
Slovak: zneškodniť
Slovenian: zatreti (kaj)
Serbian: zaustaviti glasine
Swedish: kväva, kuva, sätta stopp 
Thai: กำจัด (ข่าวลือ)
Turkish: son vermek
Taiwanese: 粉碎(謠言)，制止(計劃)
Ukrainian: придушувати
Urdu: اڑنگا لگانا
Vietnamese: kết thúc, chấm dứt
Chinese: 粉碎，戳穿
