Synonyms for Pentothal (same or very similar meaning)
WordNet sense 1 (barbiturate that is a hygroscopic powder (trade name Pentothal) that is a strong barbiturate that acts rapidly; induces a relaxed state when injected as a general anesthetic):
thiopental, thiopental sodium, thiopentobarbital sodiumFrom the ODE community, based on WordNetadd/edit