What is an alternative term for "Swiss army knife"?
You might say multi-tool.
A multi-tool (or multitool) is any one of a range of portable, versatile hand tools that combines several individual functions in a single unit. -- from Wikipedia
Pocketknife is the most common term for this type of tool. All Swiss Army knives are pocketknives:
But multi-tool would work, too, especially if the tool in question is not a pocketknife:
Wikipedia seems to give the answer quite clearly when it defines what a Swiss army knife is:
A Swiss Army knife .... is a pocket knife or multi-tool manufactured by Victorinox AG or Wenger SA.