Source : Webster's Revised Unabridged Dictionary (1913)

Booly \Boo"ly\, n.; pl. {Boolies}. [Ir. buachail cowherd; bo cow
   + giolla boy.]
   A company of Irish herdsmen, or a single herdsman, wandering
   from place to place with flocks and herds, and living on
   their milk, like the Tartars; also, a place in the mountain
   pastures inclosed for the shelter of cattle or their keepers.
   [Obs.] [Written also {boley}, {bolye}, {bouillie}.]
   --Spenser.