Spike

cortada

(volleyball)

cravo

(very large nail)

espiga

(ear of grain — see also ear)

espinho

(very large nail)

espinho

(anything resembling such a nail in shape)

pitão

(informal: running shoes with spikes in the soles)

batizar

(to covertly put alcohol or another intoxicating substance into a drink)

cortar

(volleyball)

disparar

(to increase sharply)