By preventing the autonomic reaction, beta - blockers keep the memory from forming deeper grooves in the brain, making post-traumatic stress symptoms less severe, «which I think is a really interesting development,» McGaugh says with a hearty laugh. (discovermagazine.com)
It was designed with deep grooves on its cams so that the bow strings won't derail even when used in water. (geekwrapped.com)
A scalpel rather than a butter knife, it carves a fine line without leaving deep grooves on the blacktop. (automobilemag.com)