九寸五分[kusungobu] dagger
弦楽五重奏曲[gengakugojuusoukyoku] string quintet
五つ[itsutsu] five
五つ子[itsutsugo] quintuplets
五悪[goaku] the five sins in Buddhism (murder, theft, adultery, falsehood and drink)

五音々階[goononkai] pentatonic scale
五戒[gokai] the five precepts (prohibitions against killing, theft, sexual misconduct, lying and intemperance)
五官[gokan] the five sense organs
五感[gokan] the five senses

プー太郎[puutarou] vagabond
悪太郎[akutarou] bad boy
一姫二太郎[ichihimenitarou] It's good to have a girl first and then a boy
下郎[gerou] servant
外郎[uirou] sweet rice jelly

女郎[jorou] prostitute (esp. Edo period)
女郎花[ominaeshi] golden lace (Patrinia scabiosifolia)
新郎[shinrou] bridegroom
新郎新婦[shinroushinpu] bride and groom
バカ野郎[bakayarou] idiot

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

片口鰯[katakuchiiwashi] Japanese anchovy (Engraulis japonica)
鰯雲[iwashigumo] cirro-cumulus
潤目鰯[urumeiwashi] round herring (Etrumeus teres)
畳鰯[tatamiiwashi] sheet of dried sardines
赤鰯[akaiwashi] pickled or dried sardines

干鰯[hoshika] dried sardine
鰯鯨[iwashikujira] sei whale (Balaenoptera borealis)
小鰯鯨[koiwashikujira] minke whale
真鰯[maiwashi] Japanese pilchard