Quick definitions from WordNet (United states fish and wildlife service)
▸ noun: an agency in the Department of the Interior that conserves and protects fish and wildlife andtheir habitats; assesses the environmental impact of pesticides and nuclear power site and hydroelectric dams and thermal pollution
▸ noun: an agency in the Department of the Interior that conserves and protects fish and wildlife andtheir habitats; assesses the environmental impact of pesticides and nuclear power site and hydroelectric dams and thermal pollution