The term HOSTESS MESTA refers to a job position in the hospitality industry. The job title is derived from the French word 'hôtesse' which means 'hostess'. The job involves welcoming guests, providing them with information about the establishment, and ensuring their comfort and safety. The crossword solution for this term is PERLE, which is a French word meaning 'PEARL'. This is an appropriate description of the job, as the hostess is expected to be a shining example of hospitality and grace.