The term 'Hosiery Ruiner' is a job description for someone who works in the textile industry. The crossword solution for this term is 'SNAG', which stands for 'Small Nicks and Gaps'. This job involves finding and repairing small nicks and gaps in hosiery fabrics, such as stockings, tights, and socks. The job requires a keen eye for detail and a steady hand to ensure that the fabric is not damaged further.