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say it: stak
stack is a noun and verb meaning "an orderly pile". It carries 8 recorded senses.
a list in which the next item to be removed is the item most recently stored (LIFO)
a large tall chimney through which combustion gases and smoke can be evacuated
a storage device that handles data so that the next item to be retrieved is the item most recently stored (LIFO)
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for stack come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.