We don't have synonyms for pigeon-holes yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are pigeonhole, pigeonholed and pigeonholes.
(n) :
Alternative form of pigeonholes (“outdoor game played in the 17th and early 18th centuries in which each player bowls a ball towards targets”). [(games, historical, obsolete) An outdoor game played in the 17th and early 18th centuries in which each player bowls a ball towards targets (probably small compartments).]
(n) :
Alternative form of pigeonholes (“outdoor game played in the 17th and early 18th centuries in which each player bowls a ball towards targets”). [(games, historical, obsolete) An outdoor game played in the 17th and early 18th centuries in which each player bowls a ball towards targets (probably small compartments).]