2 occurrences in 2 dictionaries
Reference: Kneading-trough
Easton
the vessel in which the dough, after being mixed and leavened, was left to swell or ferment (Ex 8:3; 12:34; De 28:5,7). The dough in the vessels at the time of the Exodus was still unleavened, because the people were compelled to withdraw in haste.