spider beetle

noun

: any of various small destructive beetles of the genus Ptinus (such as P. fur and P. brunneus) that resemble spiders and have larvae which feed on woolen goods, fur, feathers, flour, and seeds

broadly : a ptinid beetle

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!