The term 'shoe filler' refers to a type of job that involves filling shoes with materials such as foam or cork. The crossword solutions for this term are 'LAST' (4 letters) and 'FOOT' (4 letters). The term 'LAST' is used to refer to the form or shape of a shoe, while 'FOOT' is used to refer to the part of the body that the shoe is designed to fit. Together, these two words provide an accurate description of the job of a shoe filler.