Denver does not have a regional dialect like Boston or New Orleans. What we do have is a list of place names that you will not find very easily on most maps. When you visit Denver, watch the local news, or ask for directions, you will end up completely lost if you do not know these terms.
1. The Front Range. This has absolutely nothing to do with your stove. The Front Range is simply the front of the Rocky Mountain Range. The term refers to the first series of mountains one encounters as you drive west, as well as the first 20-30 miles plains that stretch out from the base of the mountains. The Front Range includes such towns as Denver, Boulder, Colorado Springs, and Fort Collins.
2. The Divide. This is short for the Continental Divide. The idea is that any precipitation that falls west of the Divide ultimiately flows to the Pacific Ocean, and that anything on the East side flows into the Atlantic. The Divide is a line that runs through the state, and is often noted on the top of major mountain passes such as Loveland Pass and Berthoud Pass.
3. DIA. DIA stands for Denver International Airport. DIA openned in 1995 and ironically, is located 20 miles from downtown, nowhere near Denver. To make matters more confusing, the airport code to use when you are searching online for airfares is not DIA, it is DEN.
4. The Tunnel. This is the Eisenhower Tunnel, actually a pair of tunnels that make up the part of Interstate 70 that runs under Loveland pass. The tunnel is the choke point between the Summit County ski areas and the Front Range.
5. The Foothills. On one of my first days living in Colorado, I hiked up an 8,000 foot peak outside of Boulder. I returned to proudly brag to my room-mate that I had just climbed a mountain. He casually informed me that I had not climbed a mountain, merely a foothill. The real mountains had summits between 10,000 and 14,000 feet.
6. 14er. This is not approximately one quarter of a San Francisco 49er, this is one of the 58 Colorado mountain peaks over 14,000 feet/4,267 metres. Unless you are an experienced hiker in great shape, you should politely decline an invitation from a local to "do a 14er." My first attempt to hike a 14er failed when I was caught in a blizzard, in the middle of summer!
7. The Tech Center. Forget IBM in Boulder, Sun Microsystems in Broomfield, or Lockheed Martin in Littleton, someone once decided that the intersection of I-25 and I-225 was the "Tech Center." From then on, mid-rise office buildings with mirrored glass windows sprouted out of the ground like weeds as every company in the city seeked to relocate there, including a few technology related ones.
8. Platte Valley. The Platte River runs just west of the downtown Denver business district and includes such attractions as Coors Field, the Denver Skate Park, the REI flagship store, Confluence Park, The Children's Museum, Elitch Gardens Amusement Park, and Invesco Field at Mile High.
9. LoDo. This stands for Lower Downtown. This is the western half of Denver's central downtown business district. It includes Union Station, Larimer Square, and Market Street.
10. Rocky Mountain Oysters. It is not a place, it is a dish that you might find served around Denver and the Front Range area. A complete description is here. It is up to you, but I try to avoid them.