Noun pentothal has 1 sense

• pentothal(n = noun.artifact) thiopental, thiopental sodium, thiopentobarbital sodium - 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; Array
is a kind of barbiturate, truth drug, truth serum