Squab \Squab\, adv. [Cf. dial. Sw. squapp, a word imitative of a splash, and E. squab fat, unfledged.]

With a heavy fall; plump. [Vulgar]

The eagle took the tortoise up into the air, and dropped him down, squab, upon a rock. --L'Estrange.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Squab \Squab\, v. i. To fall plump; to strike at one dash, or with a heavy stroke. [Obs.]

Source: Webster's Revised Unabridged Dictionary (1913)
 

Squab \Squab\, a. [Cf. dial. Sw. sqvabb a soft and fat body, sqvabba a fat woman, Icel. kvap jelly, jellylike things, and and E. quab.]

1. Fat; thick; plump; bulky.

Nor the squab daughter nor the wife were nice. --Betterton.

2. Unfledged; unfeathered; as, a squab pigeon. --King.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Squab \Squab\, n.

1. (Zo["o]l.) A neatling of a pigeon or other similar bird, esp. when very fat and not fully fledged.

2. A person of a short, fat figure.

Gorgonious sits abdominous and wan, Like a fat squab upon a Chinese fan. --Cowper.

3. A thickly stuffed cushion; especially, one used for the seat of a sofa, couch, or chair; also, a sofa.

Punching the squab of chairs and sofas. --Dickens.

On her large squab you find her spread. --Pope.

Source: Webster's Revised Unabridged Dictionary (1913)