Wiktionary
pillaring
n. (context meteorology English) Rapid rising of smoke clouds due to heat generated by burning munitions and/or existing convection currents. vb. (present participle of pillar English)
Usage examples of "pillaring".
The fires were burning sullenly, smoke pillaring straight up in the calm chill air.
In sheets and masses, in terrific, ether-wracking vortices, and in miles-long, pillaring streamers and flashes, those energies were being hurled away.
They were of pandanus wood, oblong in shape, with an effect of pillaring along the sides like straw work, lightly fringed with hair or fibre and standing on four legs.