霜柱

Literally, “frost pillar”, 霜(しも) (shimo, “frost”) + 柱(はしら) (hashira, “pillar”). The hashira changes to bashira as an instance of rendaku (連濁).

• (Tokyo) しもばしら [shìmóbáꜜshìrà] (Nakadaka – [3])
• IPA^(key): [ɕimo̞ba̠ɕiɾa̠]

霜(しも)柱(ばしら) or 霜柱(シモバシラ) • (shimobashira) 

1. ice needle
2. Collinsonia japonica

As with many terms that name organisms, this term is often spelled in katakana, especially in biological contexts (where katakana is customary).