American Heritage Dictionary
(3)
Century Dictionary
(5)
GNU Webster's 1913
(1)
WordNet
(2)
Elsewhere on the web
I've sucked down a filthy and delicious* one at a teriyaki joint in Hollywood, and I've loved the cheeseburger hiding between the carnitas and pibil at my local (and truly excellent) reader had found a rose among what one could fairly describe as the thorny situation of a Korean-California fusion lounge, my burger senses started tingling.— A Hamburger Today
This has remained a thorny issue of confrontation between the BSP and SP ever since.
• The House Subcommittee on Energy Efficiency and Renewables touched on the thorny issue of electricity decoupling, which would restructure bills so that utilities can still make money while encouraging customers to use less electricity.
Pointing to the thorny issue of illegal immigrants in America, Schlosser points out an ugly truth: corporations profit from this supply of exploitable labor; these people often fill jobs no one else wants.— Cooking Up A Story: A Show about People, Food, and Sustainable Living
Rival Cypriot leaders began negotiations Thursday on the thorny issues that have kept the Mediterranean island divided for 34 years, in what is seen as the best chance of peace for years despite their entrenched differences.— Turkish Press

Century Dictionary (1)
Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word about once a week.