double-head

verb

intransitive verb

: to run powered by two locomotives

the train double-headed up the mountain

transitive verb

: to pull (a train) with two locomotives

the heavy coal trains were double-headed

Word History

Etymology

back-formation from doubleheader

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!