A sharp increase in the magnitude or concentration of something. There was a sudden spike in the number of flu cases this winter.
A long, thin, pointed piece of metal or another hard material. The fence was topped with iron spikes to deter intruders.
A type of shoe with metal points on the sole, used in sports like track and field. The runner wore spikes to improve his grip on the track.
A flower cluster in which the flowers are attached directly to the stem without stalks. The lavender plant produced a beautiful spike of purple flowers.
A sudden, sharp increase in voltage or current in an electrical circuit. The power surge caused a spike that damaged several electronic devices.
A large, heavy nail with a flat head, used for fastening rails, timbers, or other large pieces of wood. The crew hammered the iron spike into the railroad tie.
A forceful downward hit of a ball, especially in volleyball. Her powerful spike won the team the final point.
A forceful downward strike or throw of a ball, especially in sports such as volleyball or American football. Her powerful spike sailed past the blockers for the winning point.