Thumb Scrolling is a means of controlling a smart phone using only ones thumb, on the hand they are holding the device in.
Thumb scrolling is they way in which a user of Secret Takeaways can use the app using only one hand, because all the key clicks are in reach of your thumb. The other-hand therefore is free to hold a slice of pizza, a cold beer, etc.
by Secret Moments March 10, 2022

medical term: a tear of the ulnar collateral ligament of thumb, causing the thumb to bend sharply away from the plane of the hand
by dadzone June 19, 2010

The arthritic fatigue you experience in your thumb after spending too much time scrolling up and down on Grindr.
Damn, I just wasted two hours refreshing Grindr and can barely move my thumb now - got a case of that Grindr thumb!
by C Burnett July 25, 2014

by -/:;()$&@“ November 14, 2017

To text for the purpose of social communication; from schmooze, Yiddish meaning to chat, to have an informal conversation; "thumb" is a reference to the use of thumbs to text on a mobile phone
I'll be in meetings all week, but we'll thumb-schmooze every day until we can get together on the weekend.
by Liz141 April 21, 2017

A sexual intercourse position in which a thumb is pressed into the vagina with as much pressure possible.
by anonymous May 20, 2021

Book thumb is from holding open a book with your thumb and index finger for long periods of time, causing pain in your thumb muscle.
by blueberrypancak September 2, 2013
