barrow
n.
1
"vehicle for carrying a load," c.1300, barewe, probably from an unrecorded Old English *bearwe "basket, barrow," from beran "to bear, to carry" (see bear, v.). The original had no wheel and required two persons to carry it.
2
"mound," Old English beorg (West Saxon), berg (Anglian) "barrow, mountain, hill, mound," from Proto-Germanic *bergaz (cognates: Old Saxon, Old Frisian, Old High German berg "mountain," Old North bjarg "rock"), from PIE root *bhergh- (2) "high, elevated" (cognates: Old Church Slavonic bregu "mountain, height;" Old Irish brigh "mountain;" Welsh bera "stack, pyramid;" Sanskrit b'rhant "high," brmhati "strengthens, elevates;" Avestan brzant- "high," Old Persian bard- "be high;" Greek Pergamos, name of the citadel of Troy). Obsolete except in place-names and southwest England dialect by 1400; revived by modern archaeology.
In place-names used of small continuously curving hills, smaller than a dun, with the summit typically occupied by a single farmstead or by a village church with the village beside the hill, and also of burial mounds. [Cambridge Dictionary of English Place-Names]
Meaning "mound erected over a grave" was a specific sense in late Old English. Barrow-wight first recorded 1869 in Eirikr Magnusson and William Morris's translation of the Icelandic saga of Grettir the Strong.