pacifier

US /ˈpæs.ə.faɪ.ɚ/
UK /ˈpæs.ə.faɪ.ɚ/
"pacifier" picture
1.

a rubber or plastic nipple or teat for a baby to suck on

:
The baby stopped crying as soon as she got her pacifier.
She always carries a spare pacifier in her bag.