From Longman Dictionary of Contemporary Englishoverfeedo‧ver‧feed /ˌəʊvəˈfiːd $ ˌoʊvər-/ verb (past tense and past participle overfed /-ˈfed/) [transitive] to give someone too much food→ See Verb table
Examples from the Corpus
overfeed• Just be careful not to overfeed.• The main guideline for heavy feeders is not to overfeed.• The main difficulty is that such heavy feeders are easy to overfeed and are capable of quickly fouling the aquarium water.• However, it is all too easy to overfeed and pollute the water and kill the babies that way.• Do not overfeed, and systematize your feeding to save the lives of your fish.• There is a great temptation to overfeed in the last month to ensure calf growth and nutrition.• Do not overfeed, only place in the tank enough brine shrimp to match the size of the brood.• Do not be tempted to overfeed the fish on the last day before leaving! 