くびこうか びん首効果 LinksSentence search for びん首効果Sentence search for びんくびこうかSentence search for 瓶首効果Sentence search for へいしゅこうかKanji details for 首, 効 and 果Edit in JMdict Noun1. bottleneck effectRare term, See also ボトルネック効果Other forms瓶首効果 【びんくびこうか】、瓶首効果 【へいしゅこうか】 Discussions Log in to talk about this word.