The Collaborative International Dictionary of English v.0.48:

Dodder \Dod"der\, n. [Cf. Dan. dodder, Sw. dodra, G. dotter.]
   (Bot.)
   A plant of the genus Cuscuta. It is a leafless parasitical
   vine with yellowish threadlike stems. It attaches itself to
   some other plant, as to flax, goldenrod, etc., and decaying
   at the root, is nourished by the plant that supports it.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dodder \Dod"der\, v. t. & i. [Cf. AS. dyderian to deceive,
   delude, and E. didder, dudder.]
   To shake, tremble, or totter. "The doddering mast."
   --Thomson.
   [1913 Webster]

WordNet (r) 3.0 (2006):

dodder
    n 1: a leafless annual parasitic vine of the genus Cuscuta
         having whitish or yellow filamentous stems; obtain
         nourishment through haustoria
    v 1: walk unsteadily; "small children toddle" [syn: toddle,
         coggle, totter, dodder, paddle, waddle]

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "dodder":
   age, cheat the undertaker, cower, decline, fade, fail, get along,
   get on, grow old, halt, limp, quiver, shake, shrivel, sink, teeter,
   totter, tremble, turn gray, turn white, wane, waste away, wither,
   wizen, wrinkle