Look up cubbyhole in Wiktionary, the free dictionary.
A cubby-hole, cubby-house or cubby is a small play house, or play area, for children.[2] This may be constructed by the children themselves and used as a place of play.[3]
Children may have a small shed, play-house or tent which they use as a cubby-house.[4] Children might build their own in various places in the house or garden, or have a pre-fabricated cubby. An Australian fictional treatment of the quest for the perfect cubby can be found in Ursula Dubosarsky's The Cubby House, illustrated by Mitch Vane.[5]