NOUN (1)

1. a person suffering a nervous breakdown;


ADJECTIVE (1)

1. of or relating to or suffering from neurasthenia;
- Example: "neurasthenic tendencies"

WordNet (r) 3.0 (2006):

neurasthenic
    adj 1: of or relating to or suffering from neurasthenia;
           "neurasthenic tendencies"
    n 1: a person suffering a nervous breakdown