balancer has definitions from the fields of zoology,sport
1
[ noun ] (sport) an acrobat who balances himself in difficult positions

Related terms

acrobat poise

2
[ noun ] (zoology) either of the club-like rudimentary hind wings of dipterous insects; used for maintaining equilibrium during flight

Synonyms

haltere halter

Related terms

wing dipterous_insect

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