一俵[ippyou] one (straw) bagful
炭俵[sumidawara] sack for charcoal
土俵[dohyou] arena, esp. in sumo
俵数[hyousuu] number of straw bags
俵物[tawaramono] goods in straw bags

米俵[komedawara] bag of rice
土俵入り[dohyouiri] entrance procession of sumo wrestlers into the ring
土俵際[dohyougiwa] edge of the ring
桟俵[sandawara] straw lid covering either end of a rice container