Ministry of Education 《Revised Mandarin Chinese Dictionary》

Word	瓶口
Bopomofo	`ㄆㄧㄥ^ˊ` `ㄎㄡ^ˇ`
Hanyu pinyin	píng kǒu
Interpretation	瓶子口。如：「那個花瓶的瓶口有個缺角。」