颚龈音 Traditional form: 顎齦音 Pinyin (reading): èyínyīn Definitions: prepalatal or palatal sound (linguistics) palato-alveolar consonant (linguistics) Characters: 颚 - jaw 龈 - gums 音 - sound, tone, pitch, pronunciation Traditional characters: 顎 - jaw 齦 - gums 音 - sound, tone, pitch, pronunciation