The term is
sump. There are dry & wet
sump engines. We have to use common & correct terminology here to keep everyone on the same page. Spellcheck is your friend, it's kept me out of trouble plenty.
sump; noun:
1. a pit or hollow in which liquid collects, especially one in the floor of a mine or basement.
2. the base of an internal combustion engine, which serves as a reservoir of oil for the lubrication system.
slump; verb:
1. sit, lean, or fall heavily and limply, especially with a bent back.
"she slumped against the cushions"
2. undergo a sudden severe or prolonged fall in price, value, or amount.
"land prices slumped"
slump: noun
a sudden severe or prolonged fall in the price, value, or amount of something.
The skid plate/bash plate/rock guard/etc. is a valuable thing indeed. There's only so much JB Weld can do, right?
Better to keep the rocks away from the engine sump.