ἄστικτος

ον
A. not marked with στίγματα, not tattooed, τὸ ἄστικτον Hdt. 5.6.
II. χωρίον ἄ. an estate not pledged or mortgaged (those that were so being marked by στῆλαι or ὅροι), Lys. Fr. 3S., Men. 1D., Poll. 3.85.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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