Nowy słownik angielsko-polski aut. Zygmunt Saloni, Tadeusz Piotrowski

Adj saski
N Sakson
N Sas

Wordnet angielsko-polski

(of or relating to or characteristic of the early Saxons or Anglo-Saxons and their descendents (especially the English or Lowland Scots) and their language
"Saxon princes"
"for greater clarity choose a plain Saxon term instead of a latinate one")
saski

(a member of a Germanic people who conquered England and merged with the Angles and Jutes to become Anglo-Saxons
dominant in England until the Norman Conquest)
Sas