upstack

Not valid in Scrabble

It's a recognised English word, but it isn't in the official NASPA Scrabble word list.

Definition of upstack

1 sense · 1 part of speech · etymology included

noun

The upper part of the stack.

“Ground particles are fed up the upstack where they circulate to the downstacks and either pass through outlets on the inner radial surfaces (if they are small enough) or are swept again to the bottom of the upstack by low-pressure inlets […]”

Definitions from Wiktionary, CC BY-SA.

From up- + stack.

1 play · all valid Scrabble

99 playable · top: STACKUP (15 pts)

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