Ekwall gives a little bit more in his Dictionary of English Place-names. Yes - he does give Warbreck as meaning Beacon Hill, but also comments on the elements. War is from the Old Norse "varda" or "vardi" meaning "cairn" - also found at Warboys, Warcop and Warthall. breck is from "brekka" meaning a hill or slope.
So while up on Warbreck - you might want to look for a cairn.
