spike
noun [ C ]
uk/spaɪk/ usa higher price, amount, etc., usually before a fall:
a spike in sth Local florists saw a spike in business for Mother's Day.
If price spikes continue, people will not be able to afford the new houses they want.
spike
verb [ I ]
uk/spaɪk/ usto reach a higher price, amount, etc., usually before a fall:
Cement prices are spiking.
spike to sth The jobless rate in October spiked to a five-year high.
spiking
adjective
There are worries about the spiking interest rates.