The hiragana syllable す (su). Its equivalent in katakana is ス (su). It is the thirteenth syllable in the gojūon order; its position is さ行う段 (sa-gyō u-dan, “row sa, section u”).

(naval) to rig

加増: increase / 家蔵: one's total possessions

改鋳: reminting / 懐中: one's pocket / 回虫, 蛔虫: roundworm / 海中: in the sea