oilbox means A container or reservoir for lubricating oil. Lexicurio rates it Sui generis — a strength score of 100 out of 100.
noun
- A container or reservoir for lubricating oil.“The coupled axleboxes are fed at the crown by feeds from the engine oil mechanical lubricator, and this eliminates the large multi-feed oilboxes previously fitted in the cab. […] Small auxiliary oilboxes with trimming feeds supply the axlebox guides and also the piston rod swab-boxes.”