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

 

glowstick

 noun
noun
BrE BrE//ˈɡləʊstɪk//
 
; NAmE NAmE//ˈɡloʊstɪk//
 
(also light stick)
 
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a plastic tube filled with chemicals that shines like a lamp when you bend it Glowsticks are very popular in clubs and on the rave scene. Try our glowsticks at your party.
See the Oxford Advanced American Dictionary entry: glowstick