The headword term, a neuter noun, is a very rare one, used in Ezekiel 17.3 LXX in the famous enigma of the eagle (often quoted by the Church Fathers). Only Eustathius uses this term -- once -- without quoting Ezekiel (Commentarius in hexameron 724.23, on animals that can live in and out of water).
1Taken from the Synagoge (Lexica Segueriana eta248.12); quoted also in Photius, Lexicon eta32 Theodoridis.↩