Highland tribe (4)
I believe the answer is:
clan
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">highland tribe</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for clan that I've seen before include "(Scottish) family group" , "Scots family grouping" , "Macdonald, perhaps" , "People related by blood and marriage" , "Tribe or collection of families under a cheiftain" .)