Definition of "stackable" [stackable]

• Capable of being stacked. (adjective)
• A network switch that can be set up to operate with other network switches. (noun)

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• "There are currently some great H&M discount codes doing the rounds - and the best thing about them is, they're "stackable" - if you don't know what that means, basically you can use all 3 voucher on the same order."
• "The penalties are "stackable" so that owners of S-corporation small businesses can get hit with both penalties simultaneously."
• "I agree with the system to 'stackable' drawers, just be careful when moving them..."