The Collaborative International Dictionary of English v.0.48:

Funk \Funk\, v. i.
   1. To emit an offensive smell; to stink.
      [1913 Webster]

   2. To be frightened, and shrink back; to flinch; as, to funk
      at the edge of a precipice. [Colloq.] --C. Kingsley.
      [1913 Webster]

   To funk out, to back out in a cowardly fashion. [Colloq.]
      [1913 Webster]

            To funk right out o' political strife. --Lowell
                                                  (Biglow
                                                  Papers).
      Funk

The Collaborative International Dictionary of English v.0.48:

Funk \Funk\, Funking \Funk"ing\, n.
   A shrinking back through fear. [Colloq.] "The horrid panic,
   or funk (as the men of Eton call it)." --De Quincey.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Funk \Funk\ (f[u^][ng]k), n. [OE. funke a little fire; akin to
   Prov. E. funk touchwood, G. funke spark, and perh. to Goth.
   f[=o]n fire.]
   1. An offensive smell; a stench. [Low]
      [1913 Webster]

   2. One who funks; a shirk; a coward. [Colloq.]
      [Webster 1913 Suppl.]

   3. a state of fear.
      [PJC]

   4. a mildly depressed state of mind; -- often used in the
      phrase blue funk.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Funk \Funk\ (f[u^][ng]k), n.
   an earthy, seemingly unsophisticated style of jazz music
   having elements of black American blues and gospel.
   [PJC]

The Collaborative International Dictionary of English v.0.48:

Funk \Funk\, v. t.
   1. To envelop with an offensive smell or smoke. [Obs.]
      --King.
      [1913 Webster]

   2. To funk at; to flinch at; to shrink from (a thing or
      person); as, to funk a task. [Colloq.]
      [Webster 1913 Suppl.]

   3. To frighten; to cause to flinch. [Colloq.]
      [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

funk
    n 1: a state of nervous depression; "he was in a funk" [syn:
         funk, blue funk]
    2: United States biochemist (born in Poland) who showed that
       several diseases were caused by dietary deficiencies and who
       coined the term `vitamin' for the chemicals involved
       (1884-1967) [syn: Funk, Casimir Funk]
    3: an earthy type of jazz combining it with blues and soul; has
       a heavy bass line that accentuates the first beat in the bar
    v 1: draw back, as with fear or pain; "she flinched when they
         showed the slaughtering of the calf" [syn: flinch,
         squinch, funk, cringe, shrink, wince, recoil,
         quail]