Aid

1. v. t. An aid-de-camp, so called by abbreviation; as, a general’s aid.
2. v. t. To support, either by furnishing strength or means in cooperation to effect a purpose, or to prevent or to remove evil; to help; to assist.
3. v. t. Help; succor; assistance; relief.
4. v. t. The person or thing that promotes or helps in something done; a helper; an assistant.
5. v. t. A subsidy granted to the king by Parliament; also, an exchequer loan.
6. v. t. A pecuniary tribute paid by a vassal to his lord on special occasions.

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.