An input device, sometimes part of a standard computer keyboard, consisting of a separate grid of numerical and function keys arranged for efficient data entry.(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 "keypad" in a sentence
"A full Qwerty keypad is on theback of the device, but it's inactive when the phone is folded and closed."
"Waller said that Castillo would present a credit card to make a purchase, claim the card was defective, take a keypad from the clerk and punch in a series of numbers that only provided him"
"Sending email via a T9 keypad is not ideal, and most soft keyboards I have see to date have been frustratingly slow."