What is the meaning of Katar?

Alternative form of katara (“type of dagger”).

catarrh

Cathar

catarrh

comb, crest (of birds)

A fern of the genus Sphaeropteris, specifically Sphaeropteris lunulata or Sphaeropteris nigricans.

catarrh, cold

runny nose

Cathar, Catharist

itch

caravan

convoy

waggons

catarrh

Introduced in Volapük Nulik.

Source: wiktionary.org