[1] The headword (extracted from the quotation given) is present active participle, masculine nominative singular, of e)piskope/w; cf. epsilon 2586, epsilon 2587.
[2] A slipshod version of Sophocles, Electra 1184 (with scholion). The verse should read ti/ dh/ pot', w)= ce/n', w(=d' e)piskopw=n ste/neis; see web address 1.
In his commentary, Jebb says, "dh/, which the scribe of L appears to have regarded as the true reading (cr. n.), is slightly better here than moi, which would be an ethic dat. (‘I pray thee’: cp. 144): moi could not depend on e)piskopw=n, which would require the acc. The partic. is absolute (‘with this steadfast gaze’); it does not govern ti/ (as=‘with what meaning?’)."