虱潰し
しらみつぶし- 1very thorough search (for contraband, escaped convict, etc.) ; fine-tooth-comb search ; exhaustive search ; scouring Translated by Jiyomi
Other writings and readings
しらみ潰し蝨潰し
noun (common) (futsuumeishi)
Kanji · tap to open
JMdict entry 1571870. Source and licence.