一古脑儿

variant of 一股腦兒|一股脑儿[yi1 gu3 nao3 r5]

one / single / a (article) / as soon as / entire; whole; all; throughout / "one" radical in Chinese characters (Kangxi radical 1) / also pr. [yao1] for greater clarity when spelling out numbers digit by digit

surname Gu

ancient / old / paleo-

brain / mind / head / essence

brains (as food)

variant of 人[ren2] / "person" radical in Chinese characters (Kangxi radical 10), occurring in 兒, 兀, 兄 etc

child / son

non-syllabic diminutive suffix / retroflex final