noun
glabrous sarcandra herb; Sarcandra glabra
A plant species. In everyday contexts, often written in katakana as センリョウ.
お正月の飾りに千両を使う家庭もある。
Some households use sarcandra for New Year decorations.
noun
very large sum of money; 1000 ryō
Only when written 千両
Historically, 1000 ryō was an enormous amount. In modern use, it figuratively means a huge sum of money or very high value. Sense 3 is the literal historical meaning.
この絵は千両の価値があると言われている。
This painting is said to be worth a fortune.
江戸時代、千両は大金だった。
In the Edo period, 1000 ryō was a huge sum of money.
両 is the old currency unit; 千両 specifically means 1000 ryō or, by extension, a very large amount of money.
千 (thousand) + 両 (ryō, an old currency unit). The plant name is an ateji usage, likely from the resemblance of its red berries to coins.