| 单词 | gressorial | 
| 释义 | Word Frequency gressorial(ɡrɛˈsɔːrɪəl) or gressorious (ɡrɛˈsɔːrɪəs) adjective 1.  (of the feet of certain birds) specialized for walking  2.  (of birds, such as the ostrich) having such feet Word origin C19: from New Latin gressōrius, from gressus having walked, from gradī to step | 
	
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