蚕沙

蚕沙	cán shā	silkworm guano (excrement)
蚕	cán	silkworm
沙	Shā	surname Sha
沙	shā	granule / hoarse / raspy / sand / powder / CL:粒 / abbr. for Tsar or Tsarist Russia
沙	shà	(dialect) to sift; to sieve