Mot souvent utilisé quand il s'agit d'outils de jardinage par exemple.

or casing pour boite de vitesse

Definition from Collins English dictionary: Sump: a receptacle such as the lower part of the crakcase of an internal combustion engine into which liquids, esp. lubricants, can drain to form a reservoir.

Robert et Collins provides the bove translations, suggesting that oilpn is the stndard usage in the US. Personally, as a native speaker from Britain, I am more familiar with the term sump.