Movement of the tongue in order to articulate notes on a brass or wind instrument. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "tonguing" in a sentence
"It is a facile instrument, and double tonguing, which is also possible with the horn and trumpet, is one of its popular means for display."
"That's because the researchers haven't yet mastered recreating a clarinet playing technique known as tonguing in which the player strikes the reed with their tongue."
"Also, some techniques, such as tonguing -- separating each note by touching the tip of your tongue to the whistle -- and slurring -- stringing notes together -- are more easily demonstrated than explained."