Thank You for your question about the definition of a Trundle bed. I enjoyed looking into this question very much.

The first source I found is from the Merriam-Webster site. This website is fantastic if you are looking for quick definitions. The definition in which you are seeking is just below the top of the page.

http://www.merriam-webster.com/dictionary/trundle%20bed

The second source I found Is from the online Oxford Dictionary site. On this site, after searching "Trundle bed" it re-directed me to an alternate name of "Truckle bed" The first link below is the Trundle bed entry in which it tells me the alternate name and the second is the Truckle bed page on which the deffiniton you seek is located. Both are from the Oxford Dictionary site.

http://www.askoxford.com:80/concise_oed/trundlebed?view=uk

http://www.askoxford.com:80/concise_oed/trucklebed?view=uk

For both the Merriam-Webster site as well as the Oxford site i just searched the term you were looking for. If you seek more information, another great way to find what you are looking for is by doing a Google search. In the search bar type the word define, followed by a colon and then a space, with the word in which you would like to define. Such as:

Define: Trundle Bed

If you wish to see what a Trundle bed looks like, a simple google search will give you many visual aids to assist with the definitions i have listed above.

I hope you have found this information helpful. If you have any more question do not hesitate to ask. Thank you for using AAQ