Strong’s Greek
G2777 — kephalis
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
κεφαλίς
kephalis — pronounced kef-al-is'
from 2776; properly, a knob, i.e. (by implication) a roll (by extension from the end of a stick on which the manuscript was rolled):--volume. see GREEK for 2776
1 occurrence in the KJV.
Hebrews 10:7
Then said I, Lo, I come (in the volume of the book it is written of me,) to do thy will, O God.