雁首

Etymology 1
Compound of.

Noun

 * 1) goose's neck, something resembling a goose's neck
 * 2)  corona circumference of the base of the glans penis in human males

Etymology 2
Compound of.

Noun

 * 1) bowl part of a pipe
 * 2)  human neck or head

Derived terms

 * line up (of two or more people)
 * line up (of two or more people)