Where does “diaper table” come from?

diaper table (English) comes from English diaper, from Middle English dyaper, from Old French dyapre, from Latin diaspra, from Greek δίασπρος.

Ancestry of “diaper table”, step by step

diaper table traces back through two separate lines of ancestry.

via English diaper

StepLanguageWordMeaning
1EnglishdiaperA textile fabric having a diamond-shaped pattern...
2Middle EnglishdyaperFabric with repetitive patterns of shapes or...
3Old Frenchdyapre
4Latindiaspra
5Greekδίασπρος

via English table

StepLanguageWordMeaning
1EnglishtableFurniture with a top surface to accommodate a...
2Middle EnglishtableA table; A level writing surface; Any level...
3Old Frenchtabletable
4Latintabulatablet, sometimes a tablet covered with wax for...
5Proto-Italic*taðlāboard
Every word from Greek δίασπροςEvery word from Latin diaspraEvery word from Old French dyapre
diaper table — Etymology, Origin & Word History | Etymology Explorer