A photo session is a period of time in which a photographer takes pictures of a subject. The two crossword solutions for the term PHOTO SESSION are HOOT and SHOOT. HOOT is a four-letter word meaning to make a loud, distinctive sound, usually with the mouth. SHOOT is a five-letter word meaning to fire a gun or other weapon. Therefore, a photo session could be described as making a loud sound or firing a gun in order to take pictures of a subject.