If you talk about a person's eagle eye, you mean that they are watching someone or something carefully or are very good at noticing things. He did the work under the eagle eye of his teacher The Captain's eagle eye swept the room. to use two strokes less than the usual number of strokes for a hole in a game of golf. Any of many large, heavy-beaked, big-footed birds of prey belonging to the family Accipitridae, found worldwide. Eagles are generally larger and more powerful than hawks and may resemble a vulture in build and flight characteristics, but they have a fully feathered (often crested) head and strong feet equipped with great curved talons. Most species subsist mainly on live prey, which they generally capture on the ground. Eagles have been a symbol of war and imperial power since Babylonian times. They mate for life. They nest in inaccessible places and use the same nest each year. Species vary from 24 in. to 3.3 ft (60 cm-1 m) long. The sea eagles include the bald eagle. See also golden eagle. bald eagle golden eagle sea eagle