Wordnet 3.0
VERB (1)
1. 
 bring forth a spike or spikes; 
- Example: "my hyacinths and orchids are spiking now"[syn: spike, spike out]
WordNet (r) 3.0 (2006):
spike out
    v 1: bring forth a spike or spikes; "my hyacinths and orchids
         are spiking now" [syn: spike, spike out]