FLY-ON-THE-WALL Meaning of FLY-ON-THE-WALL in English fly-on-the-wall BrE AmE ˌflaɪ ɒn ðə ˈwɔːl ◂ AmE \ -ɑːn- -ɔːn-, -ˈwɑːl ◂ Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012