Definition of catkin noun from the Oxford Advanced Learner's Dictionary

 

catkin

 noun
noun
BrE BrE//ˈkætkɪn//
 
; NAmE NAmE//ˈkætkɪn//
 
 
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a long thin hanging bunch, or short standing group, of soft flowers on the branches of trees such as the willow Word Origin late 16th cent.: from obsolete Dutch katteken ‘kitten’.
See the Oxford Advanced American Dictionary entry: catkin