ˈbȯn noun
( -s )
Etymology: Irish Gaelic badhūn enclosure, bulwark, from Middle Irish bōdhūn, from bō cow + dūn enclosure, from Old Irish, castle, fortified town; akin to Old English cū cow — more at cow , town
: an enclosure usually of mud or stone walls about a farmhouse or castle in Ireland: as
a. : the fortified court of a castle
b. : a fold for livestock, especially cattle