i Register
In some senses, caput is marked as UK, colloquial. Watch for register when choosing this word.
noun
The head.
A knob-like protuberance or capitulum.
The top or superior part of a thing.
The council or ruling body of the University of Cambridge prior to the constitution of 1856.
D. has been engaged, he tells me, through a course of laborious years, in an investigation into all curious matter connected with the two Universities; and has lately lit upon a MS. collection of charters, relative to C⸺, by which he hopes to settle some disputed points—particularly that long controversy between them as to priority of foundation. The ardor with which he engages in these liberal pursuits, I am afraid, has not met with all the encouragement it deserved, either here, or at C⸺. Your caputs, and heads of colleges, care less than any body else about these questions.
Ellipsis of caput succedaneum.