Lair/ler/ Definition 1 of 3Pro Tip 1/3Wild setting Used for places in nature where animals live and hide. We stumbled upon a bear lair in the woods. Pro Tip 2/3Natural habitat Emphasizes the lair as part of an animal's natural lifestyle. Observing the lynx in its lair offers insights into its behavior. Pro Tip 3/3Not for humans Lair suggests a place for animals, not typically used for human homes. They joked about his messy room being a lair.