Crossword clue: either of the rudimentary hind wings of dipterous insects; used for maintaining equilibrium during flight

The most common answer is balancer (8 letters).

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

balancer 8 letters wn-def

either of the rudimentary hind wings of dipterous insects; used for maintaining equilibrium during flight

haltere 7 letters wn-def

either of the rudimentary hind wings of dipterous insects; used for maintaining equilibrium during flight