control number

noun

1

: a control on a sheet of British stamps

2

: a numerical control mark on a stamp

also : a serial or catalog number of a precanceled stamp

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now