spitting rock

spitting rock

[′spid·iŋ ‚räk]
(engineering)
A rock mass under stress that breaks and ejects small fragments with considerable velocity.
References in periodicals archive ?
In the scenario Weiss and Head lay out, the impact blasts through the ice layer, spitting rock and other ejecta out onto the surrounding ice.
RICHARD HAWLEY Standing At The Sky's Edge: Usually mellow Hawley is mightily miffed at the state of the country, so angry he's made a bristling, spitting rock and roll album.
In fact, he's so angry that he's made a bristling, spitting rock and roll album.