What is the meaning of ?

the shaku, "metal shaku", or Japanese foot: a traditional Japanese unit of length equal to 10 sun () or 10 (), standardized as 33 of a meter

the "whale shaku", a variant of the shaku used in measuring cloth equal to 66 of a meter

length

Short for 尺障泥 (shaku aori, geometer moth, Geometra papilionaria).

Short for 尺取虫 (shaku-tori mushi, inchworm).

a bamboo measure

Source: wiktionary.org