Tra từ sealing wax - Từ điển Oxford Advanced Learner 8th

Từ điển Oxford Advanced Learner 8th

sealing wax ˈsealing wax [sealing wax sealing waxes] BrE NAmE noun uncountable a type of ↑wax that melts quickly when it is heated and becomes hard quickly when it cools, used in the past for ↑sealing letters, etc.