birds-mouth
bird's-mouth. Triangular right-angled notch formed in the end of a timber (e.g. rafter) to enable it to be securely fixed to a rectangular timber (e.g. a wall-plate).
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gizzard , giz·zard / ˈgizərd/ • n. a muscular, thick-walled part of a bird's stomach for grinding food, typically with grit. Also called ventriculus. ∎ a muscu… Man-o-war Bird , man-o-war bird
man-o'-war bird or frigate-bird, most aerial of the water birds, found in the tropic seas. The man-o'-war bird's wingspread (71/2 ft/2… Alum , alum (ăl´əm), any one of a series of isomorphous double salts that are hydrated sulfates of a univalent cation (e.g., potassium, sodium, ammonium, ce… Fowl , fowl / foul/ • n. (pl. same or fowls ) (also domestic fowl) a gallinaceous bird kept chiefly for its eggs and flesh; a domestic cock or hen. ∎ any ot… Hygroscopic Nucleus , hygroscopic nucleus Microscopic particle (e.g. of sulphur dioxide, salt, dust, or smoke) in the free air, on which water vapour may condense to form… Bird , Birds
A bird is a warm-blooded vertebrate (an animal with a backbone) that has feathers, a beak, and two wings. Its most unique feature is the abilit…
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birds-mouth