Colloquial A potential problem or source of trouble.
Review the work thoroughly and make sure there are no gotchas.
2
Computing, Engineering, Mathematics, Natural sciences, Physical sciences, SciencesColloquial A feature of a system or a program that works in the way it is documented but is counter-intuitive and almost invites mistake or non-function.
3
Colloquial An instance of publicly tricking someone or exposing them to ridicule, especially by means of an elaborate deception.
gotcha question
They change the number at random intervals and if you miss a sign. What a gotcha!
4
Colloquial An attempt to disprove or refute someone's argument, usually (but not necessarily) in a deceptive or disingenuous way.
You're asking me a ridiculous hypothetical question that no one can reasonably answer. You need to stop with your gotchas.
The gotcha in your second paragraph needs more developing. You don't have enough evidence that the author is contradicting himself.
5
Colloquial An instance of accomplishing a tricky idea or overcoming a difficult obstacle.
Now here's another few gotchas that you can do to implement it.
Wireless was the first gotcha when installing the distro.