rim-rockv.

1931 Amer. Speech 6 359 Masked and armed cowboys would sweep down on the sheep camps..and ‘rimrock’ the sheep bands.

1941 Wyoming: Guide to Hist. & People (Federal Writers' Project) 365 Herds [of sheep] valued at hundreds of thousands of dollars, were dynamited or ‘rimrocked’—driven over cliffs by whistling, shouting raiders.

1972 Salt Lake Tribune 19 Aug. a15/3 Mustangs..were hunted by helicopters and planes, ‘rimrocked’, that is, stampeded off cliffs, [etc.].

1980 W. C. Knott Lyncher's Moon 142 They've done murdered my man, Art Scanlon—and rimrocked one of my herds!

1991 M. Blakely Snowy Range Gang (1996) 205 He remembered rimrocking the sheep with Wild Roy. He remembered their frightened, bulging eyes... He remembered the way they kicked as they fell.

1935 E. Hemingway Green Hills Afr. xiii. 267 I knew we had lost much time on him when he rim-rocked us on the hill.

1951 R. P. Hobson Grass beyond Mountains 59 You've got me to thank, boy, for saving you from being rimrocked by a bunch of females in that town.

1951 R. P. Hobson Grass beyond Mountains 114 He had spotted a band of at least twenty wild horses..rimrocked by a heavy snowfall in a high valley.

1955 R. P. Hobson Nothing too Good for Cowboy 188 If any outfit could rimrock this drive into the cattle cars, this was the one that would do it.

1984 P. Petzoldt New Wilderness Handbk. (rev. ed.) i. 22 We were rimrocked; twenty feet of ice sloped above us, thin air gaped below.

2000 J. Galvin Fencing Sky 217 At one point he found himself rimrocked and considered backing his horse down the cliff en rappel.

2008 T. Janzen Cutting Loose 324 ‘I'll do what I can on this end to keep you from getting rimrocked.’ Rimrocked, corraled, ambushed—whatever, it was all bad.

1945 C. W. Towne & E. N. Wentworth Shepherd's Empire viii. 194 Driving sheep over a precipice was a favorite procedure. Among the practitioners—and the victims—of this method, this came to be known as ‘rim-rocking’.

1976 T. Clarke Real Cowboy 22 Cowboys were so incensed when flocks encroached on ‘their’ ranges that they sometimes resorted to ‘rim-rocking’—driving the sheep over the nearest convenient cliff.

1989 D. E. Sutherland Expansion of Everyday Life ix. 228 Dynamite tossed into corraled livestock could be effective, as was ‘rim-rocking’—driving livestock over cliffs.