[1] The headword, presumably extracted from the quotation, is the present active participle of xra/w, feminine accusative singular. Compare generally chi 541.
[2] Adler hesitantly gives the reference as Thucydides 5.16.2, on the allegation that King Pleistoanax of Sparta (pi 1741) had bribed the Delphic priestess to give certain responses. This must be right, even though what occurs there is not the headword participle but the infinitive xrh=sai (web address 1).