Catch sight of

The answer to the crossword question “Catch sight of” is NOTICE. To notice something means to become aware of it or to observe it. It can refer to something that is seen, heard, or felt. In the context of the crossword puzzle, the word “notice” is likely being used as a verb, meaning to become aware of something visually. It is a common word that can be used in a variety of situations, from noticing a friend across the room to noticing a change in the weather.