Any of several portable computers (or similar) that has access to the Internet and is primarily used to read such books(noun)
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Use "webbook" in a sentence
"Introduced a little over a month ago, this device, that they classify as a webbook, merges the home entertainment computer, netbook, and cloud computing into a single device."
"The really cool thing about the webbook is the software."
"The webbook is a high specification UMPC that has a 1.6Ghz Via C7 processor x86, 512Mb of RAM and currently an 80G HDD."