noun
late Heian period
Refers to the latter part of the Heian period (794–1185), roughly the 11th to late 12th century, often associated with the rise of the warrior class and the decline of the aristocracy.
平安後期には武士が台頭し始めた。
In the late Heian period, the samurai began to rise to power.
Compound of 平安 (Heian, the era name) + 後期 (latter period). The term is a straightforward historical period designation.