Synonyms for Strangler (same or very similar meaning)
WordNet sense 1 (an epiphytic vine or tree whose aerial roots extend down the trunk of a supporting tree and coalesce around it eventually strangling the tree):
strangler treeWordNet sense 2 (someone who kills by strangling):
choker, garroter, throttler, garrotterFrom the ODE community, based on WordNetadd/edit