1. A person (as a matron) who for propriety accompanies one or more young unmarried women in public or in mixed company
2. An older person who accompanies young people at a social gathering to ensure proper behavior; broadly; one delegated to ensure proper behavior
3. Any of a class of proteins that facilitate the proper folding of proteins by binding to and stabilizing unfolded or partially folded proteins — called also molecular chaperone + prikaži više