1a circular ornamental headdress worn by a monarch as a symbol of authority, usually made of or decorated with precious metals and jewels.
(the Crown) the monarchy or reigning monarch:their loyalty to the Church came before their loyalty to the Crown
an ornament, emblem, or badge shaped like a crown:shiny covers embossed with gold crowns
a wreath of leaves or flowers, especially that worn as an emblem of victory in ancient Greece or Rome.
2an award or distinction gained by a victory or achievement, especially in sport:the world heavyweight crown
3the top or highest part of something:the crown of the hill
the top part of a person’s head or a hat:his hair was swept straight back over his crown
the part of a plant just above and below the ground from which the roots and shoots branch out:mulch should be mounded around the crowns of the shrubs
the upper branching or spreading part of a tree or other plant:an erect evergreen tree with a dense crown
the upper part of a cut gem, above the girdle.
4the part of a tooth projecting from the gum:a thin layer of enamel covers the crown
an artificial replacement or covering for the upper part of a tooth:emergency treatment for loose crowns
5 (also crown piece) a British coin with a face value of five shillings or 25 pence, now minted only for commemorative purposes.
a foreign coin with a name meaning ‘crown’, especially the krona or krone.
6 (in full metric crown) [mass noun] a paper size, 384 × 504 mm.
(in full crown octavo) a book size, 186 × 123 mm.
(in full crown quarto) a book size, 246 × 189 mm.
1ceremonially place a crown on the head of (someone) in order to invest them as a monarch:he went to Rome to be crowned [with complement]:she was crowned queen in 1953
[with object and complement] declare or acknowledge (someone) as the best, especially at a sport:he was crowned world champion last September
(in draughts) promote (a piece) to king by placing another on top of it: (as adjective crowned)with his crowned piece he jumped them all
2rest on or form the top of:the distant knoll was crowned with trees
3be the triumphant culmination of (an effort or endeavour, especially a prolonged one):years of struggle were crowned by a state visit to Paris (as adjective crowning)the crowning moment of a worthy career
4fit a crown to (a tooth):simple fillings no longer suffice and the tooth has to be crowned
5 informal hit on the head:she contained the urge to crown him
6 [no object] (of a baby’s head during labour) fully appear in the vaginal opening prior to emerging:I was able to see our baby’s head crowning
the best and most notable aspect of something:the scene is the crowning glory of this marvellously entertaining show
chiefly humorous a person’s hair:he had a great mass of raven hair and he was very proud of this crowning glory
to crown it all
British as the final event in a series of particularly fortunate or unfortunate events:it was cold and raining, and, to crown it all, we had to walk home