glowstickglow‧stick /ˈɡləʊstɪk $ ˈɡloʊ-/ noun [countable] 
a small plastic stick with chemicals inside that produce a coloured light when they are mixed together SYN lightstick: 
Dancers were waving glowsticks.
a small plastic stick with chemicals inside that produce a coloured light when they are mixed together SYN lightstick: Dancers were waving glowsticks.