Word origin
ME
roun < OE
run, secret, mystery, runic character; readopted in the 17th c. in form of ON
rūn: both < IE echoic base *
reu-, hoarse sound, roar, grumble > Welsh
rhin, secret, L
raucus, hoarse; in sense rune (sense 3
) rune (sense 3a
) < Finn
runo, poem, canto < ON
rūn