Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A pointing device consisting of a soft pad sensitized to finger movement or pressure and used especially on laptop computers as an alternative to a mouse.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun computing A flat surface which is sensitive to touch, used mostly in laptop computers to control an on-screen cursor.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

touch + pad

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