Interpret the movements of a person's mouth (7)
(Other definitions for lip-read that I've seen before include "How to "hear" when deaf" , "Dire pal can interpret mouth movements as words" , "Understand by watching (a person) speak" , "'Hear' by looking" , "Understand by watching mouth" .)
(Another definition for lipread that I've seen is " Interpret someone''s words when deaf".)