siúr
Definitions (by source)
f., gen. seathrach, dat. siair, sister.
Stories from Keating's History of Ireland. Editor: Osborn Bergin.
f., sister; dat. siair, 9486; see deirbhshiúr
Trí Bior-Ghaoithe an Bháis: The Three Shafts of Death. Editor: Osborn Bergin.