シュ, くび, おびと, こべ, す
neck, counter for songs and poems
JLPT3 G2 S9 F98
A depiction of a *neck* that runs through *head* and trunk → *top*; *first*; *leader*. Also, *counter for poems/songs* (← counter for poems/songs located at the top of a page ← top).
[Full Kanji Etymology List]