כָּהַן
From LSJ
νοεῖν γάρ ἐστι κρεῖττον καὶ σιγὴν ἔχειν → it's better, you see, to understand and yet say nothing (Menander)
English (Strong)
a primitive root, apparently meaning to mediate in religious services; but used only as denominative from כֹּהֵן; to officiate as a priest; figuratively, to put on regalia: deck, be (do the office of a, execute the, minister in the) priest('s office).