GNU Collaborative International Dictionary of English

Found 3 definitions

1.       
   Nag (năg), n. [OE. nagge, D. negge; akin to E. neigh.]
   1. A small horse; a pony; hence, any horse, especially one that is of inferior breeding or useless.
   
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   2. A paramour; -- in contempt. [Obs.]  Shak.
   
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2.       
   Nag, v. t. & i. [imp. & p. p. Nagged (?); p. pr. & vb. n. Nagging (?).] [Cf. Sw. nagga to nibble, peck, Dan. nage to gnaw, Icel. naga, gnaga, G. nagen, & E. gnaw.] To tease in a petty way; to scold habitually; to annoy; to fret pertinaciously. [Colloq.] “She never nagged.”  J. Ingelow.
   
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3.       
   Nag (năg), n. A person who nags, especially habitually; called also nagger.
   
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