1927 (translation of German ‘Hackordnung’): a dominance hierarchy, seen especially in domestic poultry, that is maintained by one bird pecking another of lower status—hence (1929): any hierarchy based on rank or status
UK, 1806—‘to be able to sleep at night’: to be untroubled by the moral consequences of one’s actions, or by the risks and responsibilities of one’s situation
Voltaire revived the use of ‘désappointer’ in the sense ‘to frustrate the expectation or desire of (a person)’ with reference to this use of the English verb ‘disappoint’.
UK, 1935—jocular—is used by a man to defer his sexual duties to a wife or lover; is also applied to any postponement—translation of the earlier phrase ‘not tonight, Josephine’
USA & UK, 1995—to take a pregnancy test of a type involving urinating on a disposable plastic stick which immediately indicates the result—also, more generally: to take any of various other diagnostic tests of this type
UK, 1911—a sharp blow to the back of the neck—refers to the practice of killing rabbits in this way, and originated in boxing—Australia, 1913: ‘rabbit killer’, also ‘rabbit-killer punch’
a person exercising an insidious or corrupting influence, especially over a ruler, government, etc.—UK, 1917—refers to Grigori Efimovich Rasputin (circa 1869-1916), mystic and influential favourite at the court of Tsar Nicholas II