塚 (tsuka) means “mound” | MotiTan Japanese Dictionary

More examples

発掘調査で古代の塚が見つかりました。hak kutsu chō sa de ko dai no tsuka ga mi tsu ka ri ma shi ta

An ancient mound was found during an archaeological excavation.

Describes a raised mass of earth that stands above the surrounding ground, whether formed naturally or made by people.

墳丘funkyū: A mound of earth built over a burial site, especially as part of an ancient tomb.

土が集まって周囲より高くなった所や、土を盛って作った小さな山。tsuchi ga atsu ma tte shū i yo ri taka ku na tta tokoro ya tsuchi o mo tte tsuku tta chii sa na yama

塚 (tsuka) is a native Japanese word for an earthen mound; the character 塚 was adopted to write it and carries the same basic meaning.

In place names and historical terms, 塚 (tsuka) often preserves the idea of an earthen mound built as a marker or burial site.