Noah Webster's New International Dictionary of the English Language

1. (n.) Apparatus for raising or lowering heavy weights, consisting of a rope and pulley blocks; sometimes, the rope and attachments, as distinct from the block.

2. (n.) Any instruments of action; an apparatus by which an object is moved or operated; gear; as, fishing tackle, hunting tackle; formerly, specifically, weapons.

3. (n.) The rigging and apparatus of a ship; also, any purchase where more than one block is used.

4. (n.) To supply with tackle.

5. (n.) To fasten or attach, as with a tackle; to harness; as, to tackle a horse into a coach or wagon.

6. (n.) To seize; to lay hold of; to grapple; as, a wrestler tackles his antagonist; a dog tackles the game.

7. (n.) To begin to deal with; as, to tackle the problem.