勛 is a variant form of
勋 (xūn) — "distinguished merit / decoration." The mainland simplifies to
勋, but
勛 survives in Hong Kong, Taiwan, in older mainland texts, and in personal names (Studio Ghibli's Isao Takahata is
高畑勛 / Gāotián Xūn). Compounds:
勳章/
勛章 (medal),
元勳 (founding hero),
功勳 (great deed).