sealseal1 /sil/ ●●○ noun [countable] 
1
a large sea animal that has smooth fur, eats fish, and lives around coasts2an official mark that is put on documents, objects, etc. in order to prove that they are legal or real: 
the seal of the Department of Justice3a piece of rubber or plastic used on something such as a pipe, machine, or container in order to prevent something such as water or air from going into or out of it: a leak in the rubber seal4a piece of paper, plastic, wax, etc. that you break in order to open a letter or container: Do not use this product if the seal on the bottle is broken.5seal of approval if you give something your seal of approval, you say that you accept or approve of it, especially officially: a diet that has the Medical Association’s seal of approval
1 a large sea animal that has smooth fur, eats fish, and lives around coasts2an official mark that is put on documents, objects, etc. in order to prove that they are legal or real: the seal of the Department of Justice3a piece of rubber or plastic used on something such as a pipe, machine, or container in order to prevent something such as water or air from going into or out of it: a leak in the rubber seal4a piece of paper, plastic, wax, etc. that you break in order to open a letter or container: Do not use this product if the seal on the bottle is broken.5seal of approval if you give something your seal of approval, you say that you accept or approve of it, especially officially: a diet that has the Medical Association’s seal of approval
