ɪmˈpeɪl ˈfɔɹtɪfaɪ ˈfɔːtɪfaɪ ɪmˈpeɪl spaɪk spaɪk ˈspɪndəl manifest a sharp increase the voltage spiked add alcohol to (beverages) the punch is spiked! bring forth a spike or spikes my hyacinths and orchids are spiking now secure with spikes pierce with a sharp stake or point impale a shrimp on a skewer stand in the way of sports equipment consisting of a sharp point on the sole of a shoe worn by athletes spikes provide greater traction a large stout nail they used spikes to fasten the rails to a railroad tie any holding device consisting of a rigid, sharp-pointed object the spike pierced the receipts and held them in order a long, thin sharp-pointed implement (wood or metal) one of the spikes impaled him a sharp-pointed projection along the top of a fence or wall (or a dinosaur) each of the sharp points on the soles of athletic shoes to prevent slipping (or the shoes themselves) the second baseman sharpened his spikes before every game golfers' spikes damage the putting greens a very high narrow heel on women's shoes a transient variation in voltage or current a sharp rise followed by a sharp decline the seismograph showed a sharp spike in response to the temblor (botany) an indeterminate inflorescence bearing sessile flowers on an unbranched axis fruiting spike of a cereal plant especially corn