chossyadj.
/ˈtʃɒsi/, U.S. /ˈtʃɔsi/, /ˈtʃɑsi/ Rock Climbing and Mountaineering.
Of rock, a rock face, etc.: friable, crumbly, loose; consisting of such rock, esp. characterized as unsafe or unpleasant to climb.
ΘΚΠ
society > leisure > sport > types of sport or game > mountaineering or climbing > [adjective] > types of terrain
holdless1922
wind-slab1936
very severe1951
thin1955
chossy1965
1965 Climber Mar. 24/1 We start slithering down, facing outwards, on chossy slabs leading to the rows of cars looking from here like paints in a paintbox.
1984 Sc. Mountaineering Club Jrnl. No. 175. 62 Climb the jamming crack just left of an obvious chossy chimney.
1996 Climbing 1 Feb. 103/2 Beware of its heinous loose approach and wet, chossy rock.
2012 S. M. Green Rock Climbing Utah (new ed.) 488/2 The diverse layers of limestone, at first glance, appear chossy and devoid of good holds.
This is a new entry (OED Third Edition, June 2015; most recently modified version published online March 2022).
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adj.1965