(a plant with) an orange root, used as a vegetable

lure, inducement

something that produces an effect, that makes something happen

agent, originator

the state of being excited

enthusiasm; incitement

of goose

ambition, inspiration

a kind of waterbird larger than a duck

ambition, inspiration

that which incites or encourages a person

lure, inducement

motive

motive

something that annoys

incitement, stimulus

something that encourages (a person to do something, an activity etc); something, e.g. light, heat, electricity that causes an animal or plant to do something

provocation