Spavin \Spav"in\, n. [OE. spaveyne, OF. esparvain, F. ['e]parvin; akin to OF. espervier a sparrow hawk, F. ['e]pervier, fr. OHG. sparw[=a]ri (G. sperber), fr. OHG. sparo sparrow, because this disease makes the horse raise the infirm leg in the manner of a sparrow hawk or sparrow. See Sparrow.]

(Far.) A disease of horses characterized by a bony swelling developed on the hock as the result of inflammation of the bones; also, the swelling itself. The resulting lameness is due to the inflammation, and not the bony tumor as popularly supposed. --Harbaugh. [1913 Webster]

Bog spavin, a soft swelling produced by distention of the capsular ligament of the hock; -- called also blood spavin.

Bone spavin, spavin attended with exostosis; ordinary spavin. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

bog \bog\ (b[o^]g), n. [Ir. & Gael. bog soft, tender, moist: cf. Ir. bogach bog, moor, marsh, Gael. bogan quagmire.]

[1913 Webster]

1. A quagmire filled with decayed moss and other vegetable matter; wet spongy ground where a heavy body is apt to sink; a marsh; a morass. [1913 Webster]

Appalled with thoughts of bog, or caverned pit, Of treacherous earth, subsiding where they tread. --R. Jago. [1913 Webster]

2. A little elevated spot or clump of earth, roots, and grass, in a marsh or swamp. [Local, U. S.]

[1913 Webster]

Bog bean. See Buck bean.

Bog bumper (bump, to make a loud noise), Bog blitter, Bog bluiter, Bog jumper, the bittern. [Prov.]

Bog butter, a hydrocarbon of butterlike consistence found in the peat bogs of Ireland.

Bog earth (Min.), a soil composed for the most part of silex and partially decomposed vegetable fiber. --P. Cyc.

Bog moss. (Bot.) Same as Sphagnum.

Bog myrtle (Bot.), the sweet gale.

Bog ore. (Min.)
   (a) An ore of iron found in boggy or swampy land; a variety of brown iron ore, or limonite.
   (b) Bog manganese, the hydrated peroxide of manganese.

Bog rush (Bot.), any rush growing in bogs; saw grass.

Bog spavin. See under Spavin. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

bog spavin

Source: WordNet (r) 2.0
 

Spavin \Spav"in\, n. [OE. spaveyne, OF. esparvain, F. ['e]parvin; akin to OF. espervier a sparrow hawk, F. ['e]pervier, fr. OHG. sparw[=a]ri (G. sperber), fr. OHG. sparo sparrow, because this disease makes the horse raise the infirm leg in the manner of a sparrow hawk or sparrow. See Sparrow.]

(Far.) A disease of horses characterized by a bony swelling developed on the hock as the result of inflammation of the bones; also, the swelling itself. The resulting lameness is due to the inflammation, and not the bony tumor as popularly supposed. --Harbaugh.

Bog spavin, a soft swelling produced by distention of the capsular ligament of the hock; -- called also blood spavin.

Bone spavin, spavin attended with exostosis; ordinary spavin.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Bog \Bog\, n. [Ir. & Gael. bog soft, tender, moist: cf. Ir. bogach bog, moor, marsh, Gael. bogan quagmire.]

1. A quagmire filled with decayed moss and other vegetable matter; wet spongy ground where a heavy body is apt to sink; a marsh; a morass.

Appalled with thoughts of bog, or caverned pit, Of treacherous earth, subsiding where they tread. --R. Jago.

2. A little elevated spot or clump of earth, roots, and grass, in a marsh or swamp. [Local, U. S.]

Bog bean. See Buck bean.

Bog bumper (bump, to make a loud noise), Bog blitter, Bog bluiter, Bog jumper, the bittern. [Prov.]

Bog butter, a hydrocarbon of butterlike consistence found in the peat bogs of Ireland.

Bog earth (Min.), a soil composed for the most part of silex and partially decomposed vegetable fiber. --P. Cyc.

Bog moss. (Bot.) Same as Sphagnum.

Bog myrtle (Bot.), the sweet gale.

Bog ore. (Min.)
   (a) An ore of iron found in boggy or swampy land; a variety of brown iron ore, or limonite.
   (b) Bog manganese, the hydrated peroxide of manganese.

Bog rush (Bot.), any rush growing in bogs; saw grass.

Bog spavin. See under Spavin.

Source: Webster's Revised Unabridged Dictionary (1913)