Definitions:
a circular ornamental headdress worn by a monarch as a symbol of authority, usually made of or decorated with precious metals and jewels.

the top or highest part of something

the part of a tooth projecting from the gum

a british coin with a face value of five shillings or 25 pence, now minted only for commemorative purposes.

a paper size, 384 × 504 mm.

ceremonially place a crown on the head of (someone) in order to invest them as a monarch

rest on or form the top of

be the triumphant culmination of (an effort or endeavour, especially a prolonged one)

fit a crown to (a tooth)

hit on the head

(of a baby's head during labour) fully appear in the vaginal opening prior to emerging