tjbnwi said:
The sabre saw (also saber saw) is a powered or unpowered hand-held reciprocating saw. The sabre saw consists of a reciprocating cutting implement, usually a toothed blade, to chiefly cut through wood and other various materials. (Relative to the jigsaw) its primary use is to slice material handily, rather than using the traditional circular saw in the application of building homes. It's also an advantageous implement when cutting into tight crevices.
https://en.wikipedia.org/wiki/Sabre_saw
Even Bob says it's a recip saw.
http://www.bobvila.com/articles/1041-the-saber-saw/
And, I'm just fueling the fire of debate.
I think some of these names are interchangeable. I've heard a saber saw refer to a jigsaw and a recip saw.