wall creeper

noun

: a small bird (Tichodroma muraria) of the family Certhiidae that is mostly gray, black, and white with a crimson wing patch, inhabits cliffs in the mountains of southern Asia, Europe, and northern Africa, and frequents the walls of towns during migration

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!