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A keel is the central beam of the hull of a boat. Keel may also be: ==Biology== * Keel (bird), a perpendicular extension of a bird's breastbone, to which wing muscles anchor * Keel (slug), a morphological feature on the back of some land slugs which resembles the keel of an upturned boat * Keel in a (gastropod shell), a sharp ridge or edge at the shoulder or the center of periphery of the whorls of a snail shell * Keel (petal), the two bottom petals, below the wings, in flowers of the subfamily Faboideae of the flowering plant family Fabaceae; sometimes joined to form a structure whose shape resembles the keel of a boat * Sagittal Keel, a feature of the skull * The caudal keel in fish anatomy, a strengthening ridge at the base of the tail 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Keel (disambiguation)」の詳細全文を読む スポンサード リンク
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