泔 combines the water radical 氵 with 甘 ('sweet'), which also provides the pronunciation. It denotes the starchy, cloudy water left after washing rice, and by extension kitchen slops or swill, and appears almost exclusively in the compound 泔水.
Seal
Shuowen (~100 AD)
Clerical
Western Han dynasty (202 BC-9 AD)
Seal
Western Han dynasty (202 BC-9 AD)
Clerical
Eastern Han dynasty (25-220 AD)