人虱[hitojirami] Pediculus humanus (species of louse that infests humans)
頭虱[atamajirami] head louse (Pediculus humanus capitis)
虱潰し[shiramitsubushi] very thorough search (for contraband, escaped convict, etc.) (lit: crushing lice)
毛虱[kejirami] crab louse (Pthirus pubis)
虱潰しに[shiramitsubushini] one by one

羽虱[hajirami] biting louse (any louse of order Mallophaga)
虱目魚[sabahii] milkfish (Chanos chanos)
床虱[tokojirami] bedbug
衣虱[koromojirami] body louse (Pediculus humanus humanus)

データの先頭[deetanosentou] beginning of data
一頭[ittou] one large animal (horses, cattle, etc.)
一頭立て[ittoudate] one-horse (carriage)
咽頭[intou] pharynx
駅頭[ekitou] station

音頭[ondo] leading a group of people
会頭[kaitou] society president
街頭[gaitou] in the street
核弾頭[kakudantou] nuclear warhead
巻頭[kantou] opening page of book