Mark 12:4

ἐκεφαλί (αί, T.R.) ωσαν : ought to mean, summed up (κεφάλαιον, Hebrews 8:1 = the crown of what has been spoken), but generally taken to mean “smote on the head” (“in capite vulneraverunt,” Vulg [110]). A “veritable solecism,” Meyer (“Mk. confounded κεφαλαιόω with κεφαλίζω ”). Field says: “We can only conjecture that the evangelist adopted ἐκεφαλαίωσαν, a known word in an unknown sense, in preference to ἐκεφάλωσαν, of which both sound and sense were unknown”.

[110] Vulgate (Jerome's revision of old Latin version).