• 栃木県とちぎけん — Tochigi Prefecture
• 栃とちの木き — horse chestnut tree
• 栃麺棒とちめんぼう — Tochigi-style rolling pin

栃 is mainly seen in proper nouns like 栃木とちぎ. It refers to a horse chestnut tree and appears in regional food and crafts, as well as place names.