Sometimes Google is NOT your friend. You found the commonly accepted definitions of a speed trap as perceived by the public. The problem is that they're wrong. Yes, all of them.
A speed trap is a situation in which, say, you're driving along and the speed limit drops to say 50mph, then within another unreasonable distance from that it drops to say 30mph, a distance that would not reasonably allow you to reduce speed to the new limit in such a time span.
Many officers being lined up on a roadway, or even sitting purposely out of view, is not a trap. They are simply enforcing a speed limit on a public roadway. They did not "trap" you or "trick" you into speeding. You did that all on your own. The fact that a lot of them are there to catch people such as yourself doing so is not a "trap".
Now to your incorrect definition of "entrapment". This occurs when a person is coerced either directly or indirectly into committing a crime when, given the opportunity absent the circumstances created by officers, that person would not otherwise have committed that crime. Let's say I come up to you and offer you a bag of weed for $10. You say okay, give me the $10, and take the weed. You have not been entrapped because you simply responded to an opportunity. However, if I come up to you, shove a baggie of pot in your hand and grab a $10 bill from you, and then charge you with it, then you've been entrapped.
You, sir, should know what sources to look at when attempting to understand things, especially specific matters related to certain professions such as medicine, law, etc. Sometimes Google ain't it. I could provide links to CORRECT defintions of a "speed trap" and "entrapment" as presented here, but I'm sure you can find them on your own.
"Now I can just tell people that I'm old, cranky and to leave me the hell alone!" --retdetsgt
"I'm a certified Bovine Scatology Detector" --Creeker