The phrase "peer out" refers to looking or surveying the surrounding area with curiosity or caution. Synonyms for this phrase include "gaze out", "look out", "scout", "scan", "survey", "peer through", "inspect", "observe", "spy", "examine", "search", "explore", "peep", "take a peek", "peek through", "catch a glimpse", "view from", "check out", "peek out of" and "protrude from". These words could be used interchangeably depending on the context in which they are used. For instance, the phrase "peep through" could be used to describe someone trying to view something from a distance or a higher point.