Screw-conveyor
noun
1.
a device for moving loose materials, consisting of a shaft with a broad, helically wound blade rotating in a tube or trough.
screw conveyor
noun
1.
(engineering) a duct along which material is conveyed by the rotational action of a spiral vane which lies along the length of the duct Also called worm conveyor
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noun 1. a screw having a ring-shaped head. noun 1. a wood screw with its shank bent into a ring
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noun 1. screwworm fly.
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noun 1. the head or top of a screw having a slot for the end of a screwdriver. screwball 1