Tell; notify (6)
I believe the answer is:
inform
I believe this is a double definition.
'tell' is the first definition.
(I've seen this before)
'notify' is the second definition.
(I've seen this before)
(Other definitions for inform that I've seen before include "Tell (someone)" , "Impart knowledge" , "'Apprise, notify (6)'" , "Provide facts - playing well" , "Give information to (someone)" .)