Definition of "droop"
droop
verb
third-person singular simple present droops, present participle drooping, simple past and past participle drooped
(intransitive) To hang downward; to sag.
Quotations
Long before Shap platform showed up around a corner and the two arms on the gradient post drooped in both directions at once, Duchess of Buccleuch's amiable throbbing purr at the stack [funnel, chimney] had become a fierce freight-engine bark, as she resolutely dragged at her enormous load.
1949 January and February, F. G. Roe, “I Saw Three Englands–1”, in Railway Magazine, page 12
(intransitive) To slowly become limp; to bend gradually.
Quotations
Good things of day begin to droop and drowse;While night’s black agents to their preys do rouse.
c. 1606 (date written), William Shakespeare, “The Tragedie of Macbeth”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act III, scene ii]
Long after his cigar burnt bitter, he sat with eyes fixed on the blaze. When the flames at last began to flicker and subside, his lids fluttered, then drooped; but he had lost all reckoning of time when he opened them again to find Miss Erroll in furs and ball-gown kneeling on the hearth […].
1907 August, Robert W[illiam] Chambers, chapter III, in The Younger Set, New York, N.Y.: D. Appleton & Company
(transitive) To allow to droop or sink.
Quotations
[…] pithless arms, like to a wither’d vineThat droops his sapless branches to the ground;
1591 (date written), William Shakespeare, “The First Part of Henry the Sixt”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act II, scene v]
To proceed downward, or toward a close; to decline.
Quotations
[…] let us forth,I never from thy side henceforth to stray,Wherere our days work lies, though now enjoindLaborious, till day droop […]
1667, John Milton, “Book XI”, in Paradise Lost. […], London: […] [Samuel Simmons], […]; republished as Paradise Lost in Ten Books: […], London: Basil Montagu Pickering […], 1873, lines 175-178