Definition of "afternoon"
afternoon
noun
plural afternoons
The part of the day from noon or lunchtime until sunset, evening, or suppertime or 6pm.
Quotations
The Celebrity, by arts unknown, induced Mrs. Judge Short and two other ladies to call at Mohair on a certain afternoon when Mr. Cooke was trying a trotter on the track. The three returned wondering and charmed with Mrs. Cooke; they were sure she had had no hand in the furnishing of that atrocious house.
1897 December (indicated as 1898), Winston Churchill, chapter IV, in The Celebrity: An Episode, New York, N.Y.: The Macmillan Company; London: Macmillan & Co., Ltd., page 58
If the afternoon was fine they strolled together in the park, very slowly, and with pauses to draw breath wherever the ground sloped upward. The slightest effort made the patient cough. He would stand leaning on his stick and holding a hand to his side, and when the paroxysm had passed it left him shaking.
1918, W[illiam] B[abington] Maxwell, chapter XLV, in The Mirror and the Lamp, Indianapolis, Ind.: The Bobbs-Merrill Company, pages 374–375
(figuratively) The later part of anything, often with implications of decline.
Quotations
Buck. […] Theſe both put by a poore petitionerA care-crazd mother of a many children,A beauty-waining and diſtreſſed widow,Euen in the afternoone of her beſt daiesMade priſe and purchaſe of his luſtfull eye,Seduc t the pitch and height of al his thoughts,To baſe declenſion and loathd bigamie,By her in his vnlawfull bed he got.
c. 1593 (date written), [William Shakespeare], The Tragedy of King Richard the Third. […] (First Quarto), London: […] Valentine Sims [and Peter Short] for Andrew Wise, […], published 1597, [Act III, scene vii]
adverb
not comparable
(archaic in the singular) In the afternoon.
Quotations
I stayd at home till noone, and recd of Crowders for 3 loods of shilling 2l. 8s.; and afternoone I went with my wife to Wakefeild, where by ye way I spent at Toppitt 8d., and wee lay at Jackson’s all night.
1646 March 19, Adam Eyre, “A Dyurnall, or Catalogue of All My Accions and Expences from the 1st of January, 1646–”, in Yorkshire Diaries and Autobiographies in the Seventeenth and Eighteenth Centuries, published 1877, page 22
Afterwards […] they adjourned the court till two in the afternoon, and so went to prayers. Afternoon they called over the names of the rest of the college, demys, chaplains, &c.
1688, “Proceedings against St. Mary Magdalen College in Oxon, for not Electing Anthony Farmer President of the said College”, in T. B. Howell, editor, Cobbett’s Complete Collection of State Trials, volume 12, published 1812, column 61