Authorize

1. v. t. To justify; to furnish a ground for.
2. v. t. To clothe with authority, warrant, or legal power; to give a right to act; to empower; as, to authorize commissioners to settle a boundary.
3. v. t. To make legal; to give legal sanction to; to legalize; as, to authorize a marriage.
4. v. t. To establish by authority, as by usage or public opinion; to sanction; as, idioms authorized by usage.
5. v. t. To sanction or confirm by the authority of some one; to warrant; as, to authorize a report.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.