凹凸形 ao1 tu1 xing2

crenelated; corrugated

HSK 3

✍️ Practice Writing the Full Phrase

📝 Practice Each Character

Master each character individually

凹 ao1

凸 tu1

形 xing2

📖 Additional Information

English Phonetic: 'krenәleitid

Detailed Definition: v supply with battlements