Entry 2 senses Webster, 1913 Balancer /băl'-ən-sẽr/ · Bal·an·cer · IPA /ˈbæ.lən.sɚ/ 01 n. One who balances, or uses a balance. 1. One who balances, or uses a balance. 2. In Diptera, the rudimentary posterior wing.(Zool.)