Yale lock

 Longman Dictionary of Contemporary English Online朗文当代英语 5++LDOCE Online朗文 5++ˈYale lock (also Yale) trademark  a type of lock often used on the main door of a house or building. Yale locks are very common in the UK and they have a special type of key.

ˈYale lockSyllable  

Yale lock
ˈYale lock (also Yale) trademark
a type of lock often used on the main door of a house or building. Yale locks are very common in the UK and they have a special type of key.