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

 

batten

 noun
noun
BrE BrE//ˈbætn//
 
; NAmE NAmE//ˈbætn//
 
Construction
 
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(specialist) a long strip of wood that is used to keep other building materials in place on a wall or roof See related entries: Construction Word Origin late 15th cent.: from Old French batant, present participle (used as a noun) of batre ‘to beat’, from Latin battuere.
See the Oxford Advanced American Dictionary entry: batten