芒种 Grain in Ear

Ear: the top part of a grain plant, such as wheat , that contains theseeds （谷类植物的）穗

例如：ears of corn 玉米穗

The syllable"Mang" refers to the awn on the seed shell of cereal plants. The beginning of the Grain in Ear means the grains are mature, so it is a solar term reflecting agricultural phenology.

“芒”字是指谷类植物种子壳上的芒。芒种之始，即谷物成熟，是反映农业物候的节气。

——摘自《中国日报双语新闻》

说来惭愧，自己对中国的24节气（solar term）还知之甚少，也是觉得作为中国人应该更加了解我们自己的文化，才能无愧生为华夏人。