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(Agriculture) any machine or device capable of automatically supplying materials when and where they are needed, esp one for making measured quantities of food constantly available to farm livestock
an apparatus that periodically discharges a supply of some material, esp. feed for livestock.
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|Noun||1.||self-feeder - a machine that automatically provides a supply of some material; "the feeder discharged feed into a trough for the livestock"|
machine - any mechanical or electrical device that transmits or modifies energy to perform or assist in the performance of human tasks