Origin: 1875–80; < Neo-Latin bombinātus, past participle of bombināre, apparently coined by Rabelais on basis of Latin bombilāre to hum, buzz < Greek bombyliázein, derivative of bómbos;see bomb
"make a buzzing noise," 1816 (bombination), from L. bombinare, corrupted from bombitare "to hum, buzz," from bombus "a deep, hollow sound; hum, buzz," echoic.