Spiked

To fasten with spikes, or long, large nails.

"to spike down planks"

To set or furnish with spikes.

To embed nails into (a tree) so that any attempt to cut it down will damage equipment or injure people.

To fix on a spike.

(of a beverage) Containing alcohol or drugs, often without the informing those who partake.

"The large punch bowl has the special spiked punch, the small punch bowl is for the kids."

Having spikes.

Of a graph or trend that has rapidly reached a maximum.