thumb

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thumb¹

  • /ˈθʌm/
  • [ˈθʌ̈m]

Rhymes with -ʌm

Where it comes from

Derived from Middle English thombe, thoume, thoumbe (“thumb”), from Old English þūma (“thumb”), from Proto-West Germanic *þūmō (“thumb”), from Proto-Germanic *þūmô (“thumb”), from Proto-Indo-European *tūm- (“to grow”).

Cognate with West Frisian tomme (“thumb”), Dutch duim (“thumb”), Low German Duum (“thumb”), German Daumen (“thumb”), Danish, Norwegian Bokmål, and Norwegian Nynorsk tomme (“inch”), Norn tum (“thumb”), Swedish tumme (“thumb”), tum (“inch”), Russian дюйм (djujm, “inch”), Ancient Greek τύμβος (túmbos, “burial mound”). Also compare Welsh tyfu (“to grow”), Latin tumēre (“to swell”), Lithuanian tumėti (“to thicken, clot”), Avestan 𐬀𐬨𐬏𐬙 (amūt, “strong”), Sanskrit तुम्र (túmra, “strong, thick”). The parasitic ‐b has existed since the late 13th century. Doublet of tomb.

noun thumbs · thum · thume · thumbe

  1. The shortest and thickest digit of the hand that for humans has the most mobility and can be made to oppose (moved to touch) all of the other fingers.
  2. The part of a slider that may be moved linearly along the slider. a scroll-bar thumb
  3. Internet, colloquial A thumbnail picture.
  4. A top hatch plate for covering an excavator bucket, used to keep material in the digger bucket after scooping it up, and not letting it spill out.

Similar: pollex, digit I, first digit, thumby

verb thumbs · thumbing · thumbed · thum · thume

  1. transitive To touch or cover with the thumb. to thumb the touch-hole of a cannon
  2. transitive, with through To turn the pages of (a book) in order to read it cursorily. thumb through

    Similar: peruse, flip through, browse, leaf, page

  3. To gesture with the thumb, for example when flagging a ride. Oh, look! There’s a car coming! Thumb-no, wave. They probably don’t understand thumbing.
  4. To hitchhike. So I started thumbin' back east, toward my hometown.
  5. To soil or wear with the thumb or the fingers; to soil, or wear out, by frequent handling. He gravely informed the enemy that all his cards had been thumbed to pieces, and begged them to let him have a few more packs.
  6. To manipulate (an object) with the thumb; especially, to pull back the hammer or open the cylinder of a revolver. Fargo palmed out his own revolver, thumbing back the hammer as the barrel came up.
  7. To fire (a single action revolver) quickly by pulling the hammer while keeping the trigger depressed. To thumb a single-action revolver, hold down the trigger and use the thumb on the same hand to fire the gun by manipulating the hammer.

Thumb²

Where it comes from

From its thumb-like shape.

proper noun the Thumb

  1. informal The eastern part of the Lower Peninsula of Michigan, United States (the "Mitten"). Turnip Rock is located in a portion of eastern Michigan dubbed the Thumb, where 140 miles of coastline and waterfront towns offer a variety of outdoor activities, including biking, walking and kayaking.

Thesaurus

Closest in meaning: finger, pollex, leaf, flick, riffle, hitch, flip, hitchhike, riff, hand, mouth, dosage, dosing, haircut, thumbnail, sucking

noun

Similar: pollex, digit I, first digit, thumby

Translations

Every language

noun digit

Españolpulgar, pólice, dedo pulgar, dedo gordo, (quiro-)dedo gordo
한국어엄지 eomji, 엄지손가락 eomjison'garak
日本語親指 oyayubi
中文大拇指 dàmuzhǐ, 拇指 mǔzhǐ, 大指 dàzhǐ, 大拇哥 dàmǔgē
हिन्दीअंगूठा aṅgūṭhā
Kiswahilikidole gumba
Portuguêsdedo polegar, polegar
Françaispouce
DeutschDaumen
Italianopollice, dito grosso
Ελληνικάαντίχειρας antícheiras
Românădeget mare, policar
Русскийбольшо́й па́лец bolʹšój pálec
Tiếng Việtngón tay cái
العربيةإِبْهَام ʔibhām
עבריתאגודל agudál

noun part of a slider

Ελληνικάεγκοπή ευρετηρίασης egkopí evretiríasis

verb touch with the thumb

Русскиймусо́лить musólitʹ

verb turn the pages of (a book) in order to read it cursorily

中文翻閱 /翻阅 fānyuè
Françaisfeuilleter
Deutschdurchblättern
Русскийлиста́ть listátʹ, проли́стывать prolístyvatʹ, перели́стывать perelístyvatʹ

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Cite this
MLA

"thumb." Wiktionary, via Micwyn, micwyn.com/word/thumb. Accessed 6 Nov. 2026.

APA

thumb. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/thumb

Chicago

"thumb." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/thumb.

BibTeX
@misc{thumb_2026,
  title = {thumb},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/thumb},
  urldate = {2026-11-06}
}