squab 
(skwŏb)
(skwŏb)n.
1. A young, newly hatched, or unfledged pigeon.
2.
a. A soft, thick cushion, as for a couch.
b. A couch.
adj.
Young and undeveloped; newly hatched or unfledged: a squab chick.
[Probably of Scandinavian origin; akin to Swedish dialectal squabb, fat flesh.]