pacifier
pac‧i‧fi‧er /ˈpæsəfaɪə, ˈpæsɪfaɪə $ -faɪər/
noun [countable]
1. American English a rubber object that you give a baby to suck so that it does not cry
SYN dummy British English
2. something that makes people calm
pac‧i‧fi‧er /ˈpæsəfaɪə, ˈpæsɪfaɪə $ -faɪər/
noun [countable] Word Family: noun: peace, peacefulness, pacifier, pacifism, pacifist; adjective: peaceful, peaceable, pacifist; adverb: peacefully, peaceably; verb: pacify

1. American English a rubber object that you give a baby to suck so that it does not cry
SYN dummy British English
2. something that makes people calm