What does amplify mean?
The definition of amplify
Am”pli*fy, v. t.
[imp. & p. p. Amplified; p. pr. & vb. n.Amplifying.]
Etym: [F. amplifier, L. amplificare. See Ample, -fy.]

1 To render larger, more extended, or more intense, and the like; — used especially of telescopes, microscopes, etc.
2 (Rhet.)
To enlarge by addition or discussion; to treat copiously by adding particulars, illustrations, etc.; to expand; to make much of. Troilus and Cressida was written by a Lombard author, but much amplified by our English translator. Dryden.

Am”pli*fy, v. i.
1 To become larger. [Obs.] Strait was the way at first, withouten light, But further in did further amplify. Fairfax.
2 To speak largely or copiously; to be diffuse in argument or description; to dilate; to expatiate; — often with on or upon. Watts. He must often enlarge and amplify upon the subject he handles. South.