expression, noun
trifles; insignificant details
Refers to minor, unimportant matters, often used in the set phrase 重箱の隅をつつく (to nitpick).
See also: 重箱の隅をつつく
彼はいつも重箱の隅をつつくようなことばかり言う。
He always says things that are like nitpicking over trivial details.
そんな重箱の隅のような話はやめよう。
Let's stop talking about such insignificant things.
Literally 'the corner of a tiered food box'. The image of poking at the hard-to-reach corners of a 重箱 (jūbako) gives rise to the idiomatic meaning of focusing on trivial details.