Definition of linseed oil noun from the Oxford Advanced Learner's Dictionary

 

linseed oil

 noun
noun
BrE BrE//ˌlɪnsiːd ˈɔɪl//
 
; NAmE NAmE//ˌlɪnsiːd ˈɔɪl//
 
(also flaxseed oil)[uncountable]
 
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an oil made from flax seeds, used in paint or to protect wood, etc.
See the Oxford Advanced American Dictionary entry: linseed oil