Bottlecap

5 clues
Seal of a sort
Collectible topper
It fits around a mouth
Target for some openers
Neonatal nurse's headgear?
Similar answers:
Abbott
Abbottdctello
Abott
Andabottleofrum
Artichokebottom
Atbottom
Atimebottle
Atrockbottom
Atthebottom
Babybottom
Bedbottlecooler
Beerbottle
Beerbottles
Bellbottom
Bellbottomed
Bellbottomjeans
Bellbottompants
Bellbottoms
Bellybottoms
Betonesbottombearclaw