Focus on the pronunciation of seal
English definition of “seal”
/siːl/ noun [C]
› an official mark on a document, sometimes made with wax, that shows that it is legal or has been officially approved: The documents were marked with the official seal.
› a thin piece of paper or plastic that covers the opening of a container and has to be broken before the contents can be used: The seal on the bottle was broken.
› something fixed around the edge of an opening to prevent liquid or gas flowing through it: A video showed cracked seals and leaking water inside the coal mine.
under seal › LAW if something is under seal, it cannot be seen, copied, or taken away: His file is currently under seal. → See also company seal