1. noun
A brief electronic message sent between mobile phones, containing text composed by the sender, usually input via a lettering system on a cell phones numeric keypad, the content of which is often abbreviated like shorthand by leaving out vowels or using phonetic spellings.
2. verb
a) To transmit a text message to.
I told him to text message you when hes finished.
b) To send as a text message.
Please text message the directions to me.
Wikipedia foundation.