Couple things: first, I would never say "cast iron frying pan"; it just...ew. Helen--loved your eggs over easily! I think your def.'s were better, too.
Now, from Gurunet, if I can keep it coming up--it wants me to adopt its new version:
skil·let (skĭl'ĭt)
n.
1. See frying pan. See Regional Note at andiron, frying pan.
2. Chiefly British. A long-handled stewing pan or saucepan sometimes having legs.
[Middle English skelet, from Old French escuelete, diminutive of escuele, plate, from Latin scutella, diminutive of scutra, platter.]


fry·ing pan (frī'ĭng)
n.
A shallow, long-handled pan used for frying food. Also called skillet; also called regionally fry pan, spider.

REGIONAL NOTE The terms frying pan and skillet are now virtually interchangeable, but there was a time when they were so regional as to be distinct dialect markers. Frying pan and the shortened version fry pan were once New England terms; frying pan is now in general use, as is the less common fry pan, now heard in the Atlantic states, the South, and the West, as well as New England. Skillet seems to have been confined to the Midland section of the country, including the Upper South. Its use is still concentrated there, but it is no longer used in that area alone, probably because of the national marketing of skillet dinner mixes. The term spider, originally denoting a type of frying pan that had long legs to hold it up over the coals, spread from New England westward to the Upper Northern states and down the coast to the South Atlantic states. It is still well known in both these regions, although it is now considered old-fashioned. See Note at andiron.


and·i·ron (ănd'ī'ərn)
n.
One of a pair of metal supports used for holding up logs in a fireplace. Also called dog; also called regionally dog iron, firedog.

[Middle English aundiren, alteration (influenced by Middle English iren, iron) of Old French andier, of Celtic origin.]

REGIONAL NOTE A number of words that formerly were limited to one region of the U.S. are now used throughout the country. Andiron was once Northern, contrasting with Southern dog iron and fire dog. The Southern terms remain limited to that region, but andiron is now everywhere. Other formerly Northern words that have become national include faucet, contrasting with Southern spigot; frying pan, contrasting with Midland and Upper Southern skillet; and freestone peach, contrasting with clearseed and open peach in parts of the South. Southern words that are now used nationwide include feisty and gutters. See Note at frying pan.

I remember that we had a discussion on faucet/spigot, etc. I have never heard the terms "clearseed and open peach".