si(ㄙ)
1. 草名。
name of a variety of grass; growing in the water with edible flowers
【申集上】【艸部】 康熙筆画:18画,部外筆画:12画
《唐韻》息移切《集韻》相支切,音斯。《齊民要術》《字林》曰:草生水中,其花可食。