・the what of a thing.

・uncover the what and why of their relationship それらの関係の本質と理由を明らかにする.

OE hwt (neut.) ＜ Gmc χwat (Du. wat / G was / ON hvat) ← IE kwod- (L quod) (neut.) ← kwo- 'WHO' what・cha・ma・call・it /(h)wtmklt, (h)w()-, -k()l- ｜ (h)wtmklt/

n. 《口語》 ＝what-do-you-call-it.

《1928》 《転訛》 ← what you may call it what'd /(h)wd, (h)w()- ｜ (h)wt-/