head or tail

noun

1

: this side or that side

—often used in plural in tossing a coin to decide a choice, question, or stake compare heads or tails

2

: beginning or end : one thing or another : something definite

could not make head or tail of what he said

Word History

First Known Use

1546, in the meaning defined at sense 2

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