Rebato is an obsolete term for a ruff or collar worn in the 16th and 17th centuries. It was a fashionable accessory for both men and women and was typically made of fine linen or lace. Synonyms for the word "rebato" include "ruff," "frill," "collar," "neckband," "lacework," and "neckpiece." The usage of rebato as a collar has declined, but it is still used in the dress of certain professions like law and academics, hence the term "Academic Collar." It can also be found in period dramas portraying the fashion of the Elizabethan and Jacobean eras.