The visual property of something shining with reflective light; shine. / (computing) The coefficient of specular reflectivity associated with the surface of an object being displayed.

plural of shininess

plural of shiny

Reflecting light. / Emitting light. / (colloquial) Excellent; remarkable. / (obsolete) Bright; luminous; clear; unclouded.

(informal) Anything shiny; a trinket.

(sumo) A rikishi who is crushed by his opponent when both fall simultaneously.

plural of shiny cowbird

A passerine bird (Molothrus bonariensis) of the Icteridae family.

(figuratively) Something that attracts a great deal of attention because of its superficial characteristics. / Used other than figuratively or idiomatically: see bright, shiny, object.

plural of bright shiny object