I. ˈtext ˌmessage 1 BrE AmE noun [countable]
a written message that is sent or received on a ↑ mobile phone or ↑ pager
II. text ˌmessage 2 BrE AmE ( also text ) verb [transitive]
to send someone a written message on a ↑ mobile phone or ↑ pager :
She’s always text messaging her friends.
—text-messaging noun [uncountable]