cateran

[kat-er-uh n] /ˈkæt ər ən/
noun
1.
(formerly) a freebooter or marauder of the Scottish Highlands.
Origin
1325-75; < Medieval Latin caterānus, Latinized form of Middle English (Scots) catherein < Scots Gaelic ceatharn; see kern1
British Dictionary definitions for cateran

cateran

/ˈkætərən/
noun
1.
(formerly) a member of a band of brigands and marauders in the Scottish highlands
Word Origin
C14: probably from Scottish Gaelic ceathairneach robber, plunderer