We found 27 dictionaries that define the word tach:

General (18 matching dictionaries)

1. tach: Merriam-Webster
2. tach: Oxford Learner's Dictionaries
3. tach: American Heritage Dictionary of the English Language
4. tach: Collins English Dictionary
5. tach: Vocabulary.com
6. Tach, Tach, tach: Wordnik
7. tach: Wiktionary
8. tach: Webster's New World College Dictionary, 4th Ed.
9. tach: Infoplease Dictionary
10. tach, tach: Dictionary.com
11. Tach: Wikipedia, the Free Encyclopedia
12. tach: Rhymezone
13. tach: Webster's 1828 Dictionary
14. tach: Stammtisch Beau Fleuve Acronyms
15. tach: FreeDictionary.org
16. tach: The Phrontistery - A Dictionary of Obscure Words
17. tach: Mnemonic Dictionary
18. tach: TheFreeDictionary.com

Art (1 matching dictionary)

19. tach-: A Cross Reference of Latin and Greek Elements

Computing (1 matching dictionary)

20. tach: Encyclopedia

Medicine (1 matching dictionary)

21. tach: Medical dictionary

Miscellaneous (2 matching dictionaries)

22. TACH: Acronym Finder
23. AbbreviationZ (No longer online)

Slang (2 matching dictionaries)

24. tach: Green’s Dictionary of Slang
25. Tach: Urban Dictionary

Sports (1 matching dictionary)

26. Internet Karting Glossary (No longer online)

Tech (1 matching dictionary)

27. AUTOMOTIVE TERMS (No longer online)

(Note: See taching as well.)

Definitions from Wiktionary (tach) ▸ noun:  (obsolete, costermongers) A hat. ▸ noun:  (medicine, colloquial) Tachycardia. ▸ noun:  (informal) Clipping of tachometer. [A device for measuring the revolutions per minute (RPMs) of a revolving shaft, as with the driveshaft of an automobile.] Similar: tachometer, tatch, targe, tile, label, tail, tasselet, tace, tam-o'-shanter, target, more... Types: analog, digital, mechanical, electronic, more... Phrases: v tach, more... Adjectives: pulseless, net, sinus, stereo, hoodmounted, rpm, match, pac ▸ Words similar to tach ▸ Usage examples for tach ▸ Idioms related to tach ▸ Wikipedia articles (New!) ▸ Popular adjectives describing tach ▸ Words that often appear near tach ▸ Rhymes of tach ▸ Invented words related to tach