Definitions of baster:

• noun:   a tube with a rubber bulb used to take up and release melted fat or gravy in order to moisten roasting meat
• noun:   a sewer who fastens a garment with long loose stitches
• noun:   a cook who bastes roasting meat with melted fat or gravy
• name:  A surname (very rare: popularity rank in the U.S.: #41378)