noun
: one of the incomplete cartilaginous rings that support the upper part of the bronchial tubes of most birds and in singing birds form a part of the syrinx
noun
: one of the incomplete cartilaginous rings that support the upper part of the bronchial tubes of most birds and in singing birds form a part of the syrinx
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012