noun
inner front panel; underlap
Refers to the part of a kimono or similar wrapped garment that is tucked closest to the body, under the outer front panel (上前). Used in contexts of dressing, tailoring, or describing kimono construction.
See also: 上前
着物を着るときは、下前を先に合わせてから上前を重ねます。
When putting on a kimono, first bring the inner front panel together, then overlap the outer front panel.
下前の衿が少し見えているので、直してください。
The collar of the inner panel is showing a little, so please fix it.