Strong Concise Dictionary Of The Words In The Hebrew Bible
H3730כַּפְתֹּרkaphtôr; or (Amos 9:1) כַּפְתּוֹר; probably from an unused root meaning to encircle; a chaplet; but used only in an architectonic sense, i.e. the capital of a column, or a wreath-like button or disk on the candelabrum — knop, (upper) lintel.