Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
jackstones is a noun meaning "game equipment consisting of one of several small six-pointed metal pieces that are picked up while bouncing a ball in the game of jacks". It carries 2 recorded senses.
game equipment consisting of one of several small six-pointed metal pieces that are picked up while bouncing a ball in the game of jacks
a game in which jackstones are thrown and picked up in various groups between bounces of a small rubber ball
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 jackstones come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.