head up

verb

transitive verb

1

: to close (as a barrel) at the head or with a head

2

: head vt 4

intransitive verb

1

: head entry 3 vi 3a

2

: to come to an apex : find a head

a bureaucracy that headed up in the king

—W. P. Webb

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!