Noun
Yuezhi pl (plural only)
An ancient Indo-European people who originally settled in the arid grasslands of the eastern Tarim Basin area, in what is today Xinjiang and western Gansu, in China, before migrating to Transoxiana, Bactria and then northern South Asia, where one branch of the Yuezhi founded the Kushan Empire.
By the time Zhang Qian visited, there was no longer a major king, and the Bactrians were under the suzerainty of the Yuezhi. Source: Internet
During the time period from 90 BC to 30 BC, Yuezhi destroyed the last Hellenistic successor states and, together with the Tokhari, (to whom they were closely related) created a Kushan Empire around 30 AD. Source: Internet