栗

Bottom tree radical — pictograph of a tree with branches above and roots below. The indexing radical here, supplying the basic meaning: 栗 names both the chestnut tree and its fruit. Combined with the spiny husk above, the picture is a tree bearing prickly-shelled nuts — the literary 'tremble' sense developed from the shivering image of the bristled husk.

Top — visually the flat-bottomed cover form 覀 (variant of 西), but in 栗 this is a stylization of the original picture: a chestnut burr bristling with spines, the prickly husk around the nut. The shape gives 栗 its distinguishing image, separating it from plain 票 ticket which looks similar above the line.