helpmate
nounEtymology A folk-etymological alteration of helpmeet, by reanalysis as help + mate.
1
A person who supplies help or companionship.
2
A wife or spouse.
- The host himself was one of those very quiet men whom we usually see linked to the most active helpmates.1834, L[etitia] E[lizabeth] L[andon], chapter XVII, in Francesca Carrara. […], volume II, London: Richard Bentley, […], (successor to Henry Colburn), →OCLC, page 191:
3
Board games, Chess, Games A recreational problem in chess in which both sides cooperate to achieve a specific goal.