American Heritage Dictionary
(6)
Century Dictionary
GNU Webster's 1913
WordNet
(2)
Elsewhere on the web
It says Vermont's system is borderline, and Rhode Island's raises privacy and security concerns.— WMTW.com - Local News
It said Vermont's system is borderline, and Rhode Island's raises privacy and security concerns.— Nashuatelegraph.com local, state, business and sports news
•CLUSTER B (bad, dramatic & erratic) - antisocial, borderline, histrionic, narcissistic— Recently Uploaded Slideshows
There are other countries where there is more of a borderline, and in those countries it may be possible to work out an agreement with them to extract a clear pledge that there will be no torture and to follow up with monitoring.— Democracy Now!
The title itself prompts one to assume a relation with the Professor Layton series, but the odd name is the extent of this similarity-except for the borderline stereotypical British characters.— PopMatters

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