What is the meaning of Tabun?

An extremely toxic nerve gas; a clear, tasteless liquid, molecular formula C₅H₁₁N₂O₂P.

A clay oven, shaped like a truncated cone, with an opening at the bottom for stoking the fire.

genitive singular of tabu

superessive singular of tabu

Rōmaji transcription of たぶん

herd of horses

throng of people

steppe horse

tabun (extremely toxic synthetic organophosphorus compound)

Source: wiktionary.org