Open English Wordnet
Nouns
(n)reflection, reflexionthe phenomenon of a propagating wave (light or sound) being thrown back from a surface
(n)expression, manifestation, reflection, reflexionexpression without words“tears are an expression of grief”, “the pulse is a reflection of the heart's condition”
(n)contemplation, reflection, reflexion, rumination, musing, thoughtfulnessa calm, lengthy, intent consideration
(n)reflection, reflexionthe image of something as reflected by a mirror (or other reflective material)“he studied his reflection in the mirror”