Bash Abdallar was a village in the territory of the Iravan uezd of the former Iravan governorate, later in the former Ellar (Kotayk, Abovyan) district, and present-day Kotayk province. The name of the village was noted as “Tazagyugh” in Armenian sources.

The village was solely inhabited by143 Azerbaijanis in 1897. In the early 20th century the village was attacked by Armenian armed units and the Azerbaijanis were massacred or ousted from the village. Later, the village was abolished. At present, it is in ruins.

The toponym was coined by adding the plural suffix “–lar” to the Old Turkic ethnonym “Abdal”. “Bash” denotes a distinctive feature.