noun, adverb · light, ray, or beam of illumination

清晨的第一缕光穿过了窗帘。

verb, adjective, directional, modal particle, pronoun · used up, exhausted, or nothing left

由于太饿了，他把饭都吃光了。

adverb, verb · only, merely, or solely

光靠说话是不能解决问题的。

verb, descriptive · to leave a part of the body uncovered or naked

他在家里总是喜欢光着膀子。

adjective, expression · bright, shiny, or polished surface

这张木桌子的表面磨得很光。

noun · honor, glory, or credit, especially derived from association with someone or something successful

他为国争光。