Spike

スパイク

supaiku

(volleyball)

スパイク靴

supaiku-gutsu

(informal: running shoes with spikes in the soles)

牡鹿

ojika

(zoology: an adolescent male deer)

穂

ho

(ear of grain — see also ear)

穂状花序

hojō-kajo

(botany: kind of inflorescence)

針

hari

(very large nail)

針

hari

(anything resembling such a nail in shape)

針

hari

(sharp peak in a graph)