What is the meaning of Loh?

What!?, Oh come off it!, hang on... (did I hear that right?)

Adds emphasis at the end of a sentence or clause.

alternative spelling of lauh (board, tablet, slab)

Romanization of ꦭꦺꦴꦃ

Alternative form of lōg

forest

hole

road; street; route

opportunity; way out

means; method; way; trick

Source: wiktionary.org