H5071 נְדָבָה (ned-aw-baw')

KJV renderings: free(-will) offering, freely, plentiful, voluntary(-ily, offering), willing(-ly), offering).
Strong's definition: properly (abstractly) spontaneity, or (adjectively) spontaneous; also (concretely) a spontaneous or (by inference, in plural) abundant gift
Derivation: from H5068 (נָדַב);

From James Strong's public-domain dictionaries (H), JSON edition by OpenScriptures (CC-BY-SA). Every dotted-underline word in the text links here.