summer melt
n.— «Bryant said that, typically, some students change their minds during the summer. However, he said, he is confident that the university will not lose significant numbers to what he calls “summer melt.”» —“SMU Expects Entering Fall Class To Be ’86 Size” by Connie Pryzant Dallas Morning News (Texas) June 25, 1987. (source: Double-Tongued Dictionary)
Further reading
If you speak a second or third language, you may remember the first time you dreamed in that new tongue. But does this milestone mean you’re actually fluent? And a couple’s dispute over the word regret: Say you wish you’d been able...
While reading Great Expectations (Bookshop|Amazon) by Charles Dickens, a listener in Arlington, Texas, is surprised when one of the characters inherits some money, which Dickens describes as a cool four thousand. Were they really using cool that way...