wěi​bù

rear part

尾部 wěi​bù
rear part noun
The rear section or tail of an object or animal; the final part of a sequence or text

I remember seeing him in the back of the plane.

empennage
The tail assembly of an aircraft, including the horizontal and vertical stabilizers

Frequency

Movie subtitles
1.22 per million appears in 1% of films
Written text
3.78 per million

Sources