The Collaborative International Dictionary of English v.0.48:
half-truth \half"-truth`\ (h[aum]f"tr[=oo]th), n.; pl. half-truths (h[aum]f"tr[=oo][th]z)`. a partially true statement, especially one intended to deceive or mislead. [WordNet 1.5]WordNet (r) 3.0 (2006):
half-truth n 1: a partially true statement intended to deceive or mislead