Definition of facetime:
(v) :
(informal, transitive, intransitive) To communicate with somebody using the FaceTime videotelephony software.
(v) :
(informal, transitive, intransitive) To communicate with somebody using any form of video telephony software.
(n) :
A videotelephony software developed by Apple Inc., introduced in 2010.
(v) :
Alternative letter-case form of FaceTime. [(informal, transitive, intransitive) To communicate with somebody using the FaceTime videotelephony software.]
(n) :
Alternative form of face time. [Time spent in visual communication with another party (as opposed to communication over the phone, via e-mail, instant messaging, etc.).]