thumb

• 手和脚的第一个指头，短而粗，与其他四指相对，能与其他手指对握。也指手套上套拇指的部分。

A noun referring to the short, thick first digit of the human hand, set apart from the other four fingers and opposable to them.

1. Body partA1formal

   The short, thick first digit of the human hand, set opposite to the other four fingers.

   拇指

   • He accidentally hit his thumb with a hammer.
   • She gave a thumbs-up sign to show her approval.
   • The baby sucked his thumb for comfort.

   同义词pollex

2. Measurement unitB1informal

   An informal unit of length equal to the width of a thumb, approximately one inch.

   拇指宽

   • The gap was about a thumb wide.
   • He measured the board using his thumb as a guide.
   • The recipe called for a thumb-sized piece of ginger.

• 用拇指按压、触碰或操作某物，也指竖起拇指示意或搭车。

A verb meaning to press, touch, or manipulate something with the thumb, or to signal by sticking out the thumb.

1. Press with thumbB1informal

   To press, touch, or manipulate something using the thumb.

   用拇指按压

   • He thumbed the button to start the machine.
   • She thumbed through the pages of the magazine.
   • He thumbed the remote control to change the channel.

   同义词manipulatepresspushtouch

2. HitchhikeB2informal

   To travel by getting free rides from passing vehicles, typically by signaling with the thumb.

   搭便车

   • They thumbed a ride to the coast.
   • He thumbed his way across the country.
   • She thumbed a lift from a friendly truck driver.

   同义词hitchhitchhike

3. Signal disapprovalB2informal

   To express disapproval or rejection by pointing the thumb downward.

   表示反对

   • The audience thumbed down the performance.
   • The committee thumbed the proposal.
   • Critics thumbed the movie as a failure.

   同义词turn thumbs down

   反义词approveendorse