Definition of crook verb from the Oxford Advanced Learner's Dictionary

 

crook

 verb
verb
BrE BrE//krʊk//
 
; NAmE NAmE//krʊk//
 
Verb Forms present simple I / you / we / they crook
BrE BrE//krʊk//
 
; NAmE NAmE//krʊk//
 
he / she / it crooks
BrE BrE//krʊks//
 
; NAmE NAmE//krʊks//
 
past simple crooked
BrE BrE//krʊkt//
 
; NAmE NAmE//krʊkt//
 
past participle crooked
BrE BrE//krʊkt//
 
; NAmE NAmE//krʊkt//
 
-ing form crooking
BrE BrE//ˈkrʊkɪŋ//
 
; NAmE NAmE//ˈkrʊkɪŋ//
 
 
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crook something to bend your finger or arm She winked and crooked a finger at him. Word Origin Middle English (in the sense ‘hooked tool or weapon’): from Old Norse krókr ‘hook’. A noun sense ‘deceit, guile, trickery’ (compare with crooked) was recorded in Middle English but was obsolete by the 17th cent. The Australian senses are abbreviations of crooked.
See the Oxford Advanced American Dictionary entry: crook