Rag (răg), v. t. [Cf. Icel. rægja to calumniate, OHG. ruogen to accuse, G. rügen to censure, AS. wrēgan, Goth. wrōhjan to accuse.] To scold or rail at; to rate; to tease; to torment; to banter. [Prov. Eng.] Pegge.
[1913 Webster]

Rag (răg), v. i. [imp. & p. p. Ragged (răgd); p. pr. & vb. n. Ragging (răgg&ibreve_;ng).] To become tattered. [Obs.]
[1913 Webster]

Rag, v. t. 1. (Music) To play or compose (a piece, melody, etc.) in syncopated time. [Colloq.]
[Webster 1913 Suppl.]

2. To dance to ragtime music, esp. in some manner considered indecorous. [Colloq. or Slang]
[Webster 1913 Suppl.]