thyroid
/ˈθaɪrɔɪd/noun
1
- （亦作thyroid gland）a large ductless gland in the neck which secretes hormones regulating growth and development through the rate of metabolism甲状腺。
1.1
- mass noun an extract prepared from the thyroid gland of animals and used in treating deficiency of thyroid hormones甲状腺（制）剂。
2
- （亦作thyroid cartilage）a large cartilage of the larynx, a projection of which forms the Adam's apple in humans甲状软骨。
词源
early 18th cent. (as an adjective)： from Greek （khondros） thureoeidēs 'shield-shaped (cartilage)'， from thureos 'oblong shield'.