Compounds of ろく

• ころく
  (n) quiver (worn on the right hip; post-Nara period)
• くろくろ
  (adv) (on-mim) going round and round
• ともろく
  (n) (abbr) (sl) Internet friend or buddy list
• とろくさい
  (adj-i) (derog) dull
  slow
  stupid