spacklePronunciation: /ˈspak(ə)l/Definition of spackle noun [mass noun] North American trademark a compound used to fill cracks in plaster and produce a smooth surface before decoration: ceiling spackle and fake-wood decorative beams verb [with object] repair (a surface) or fill (a hole or crack) with spackle: pull off any loose paper and spackle these areasOrigin: 1920s: perhaps a blend of sparkle and German Spachtel 'putty knife, mastic'spackle in other Oxford dictionaries Definition of spackle in the US English dictionary