Two attempts, one failure
A double top is two highs at roughly the same level, separated by a pullback. A double bottom is the reverse. A triple adds a third attempt.
The reading is simple: price tried a level twice and could not get through. Buyers were exhausted at that price, or sellers were waiting there in size.
But that reading contains a trap, and the levels lesson already gave you the answer to it.
Why more touches means less, not more
Each test of a level consumes the orders that defend it. Sellers who wanted to sell at 1.1720 sold on the first touch. Fewer remain on the second, fewer still on the third.
So a triple top is structurally weaker than a double top, not stronger — which is the opposite of what the shape suggests. By the third attempt, most of the supply that created the level has been absorbed.
This is why triple tops break upward so often, catching everyone who read "three rejections, very strong resistance."
The equal-highs problem
Two highs at almost exactly the same price create the most visible level on any chart. Everyone can see it. Everyone's stop goes just beyond it.