Assertion: knocker | /r/HasProperty | synonym
Facets:
value: by the 18th century
type: TEMPORAL
value: for age
type: OTHER
value: for toughness
type: CAUSE
Source sentences:
text: 'Newgate's knocker' was a synonym for age and toughness by the 18th century; for instance, in this piece from The Batchelor: or, Speculations of Jeoffry Wagstaffe, Esq, 1769: