BT Ber 28a(17) :חצבי חיוורי דמליאן סר{{י}}קאתא‏ : white jugs that had been filled with worthless things
See the entire entry for ḥiwwār adj. white

BT Ber 28a(17) :חצבי חיוורי דמליאן סר{{י}}קאת‏ : unglazed pitchers that are filled with tow cotton [metaph. for something totally worthless]
See the entire entry for srāqā, srāqtā n.f. tow, culling