What is the meaning of Lahar?

A volcanic mudflow.

bramble, blackberry bush

lahar (volcanic mudflow)

lava

lahar (volcanic mudflow)

Romanization of ꦭꦲꦂ

lava

lahar (volcanic mudflow)

lahar

Romanization of 𒇇 (laḫar)

lahar (volcanic mudflow)

Alternative form of lahad

Alternative form of lahad

Source: wiktionary.org