Collins COBUILD Advanced Learner's English Dictionary - lip-read

(lip-reading) If someone can lip-read, they are able to understand what someone else is saying by looking at the way the other person’s lips move as they speak, without actually hearing any of the words. They are not given hearing aids or taught to lip-read. VERB: V • lip reading The teacher should not move around too much as this makes lip reading more difficult. N-UNCOUNT