EIGNE

Eigne (?), a. [[OF. aisné, ainsné, F. aîné, fr. L. ante natus born before. Cf. Esnecy.]] 1. 1. (Law) Eldest; firstborn. Blackstone.
2. 2. Entailed; belonging to the eldest son.
Bastard eigne, a bastard eldest son whose parents afterwards intermarry.