奶酥 Traditional form: 奶酥 Pinyin (reading): nǎisū Definitions: butter biscuit butter bun Characters: 奶 - milk; breasts; nurse, grandmother 酥 - butter; crispy, flaky; fluffy, light Traditional characters: 奶 - milk; breasts; nurse, grandmother 酥 - butter; crispy, flaky; fluffy, light