Wordnet 3.0
NOUN (1)
1.
interrogation often accompanied by torture to extort information or a confession;
WordNet (r) 3.0 (2006):
third degree
n 1: interrogation often accompanied by torture to extort
information or a confession
Moby Thesaurus II by Grady Ward, 1.0:
19 Moby Thesaurus words for "third degree":
cross-examination, cross-examine, cross-interrogate,
cross-interrogation, cross-question, cross-questioning,
direct examination, extract information, go over, grill, grilling,
inquisition, interrogation, make inquisition, police interrogation,
pry out, redirect examination, roast, the grill