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The hill, on the Highland Boundary Fault, has outcrops of puddingstone, which, at this site, is Inchmurrin Conglomerate. The hill is marked as "Gouckhill" on Roy's Military Survey of Scotland (1740s-50s); the same "Gouk" element appears to be present in the "Slewna gowack hill" shown on the 1654 Pont/Blaeu map of the Lennox. "Slewna" presumably represents the Gaelic "sliabh na" (on which, see below).

See Link for an annotated terrain map that shows the course of the Highland Boundary Fault in relation to Gouk Hill and other nearby features.

For a modern and in-depth account of the "sliabh" element, to which particular significance was attached in some earlier studies of place-names, see "Sliabh in Scottish Place-Names: its Meaning and Chronology", by Simon Taylor (University of Glasgow) on pages 99—136 of Volume I (2007) of "The Journal of Scottish Name Studies": Link