名詞 dodder:

1. a leafless annual parasitic vine of the genus Cuscuta having whitish or yellow filamentous stems; obtain nourishment through haustoria

動詞 dodder:

1. walk unsteadily
   同義詞：toddle, coggle, totter, paddle, waddle

1. He doddered down the street.
   他踉踉蹌蹌沿街走去。
2. He is over eighty, but he still dodders along.
   他年過八十，但仍蹣跚而行。

dodder

v.intr.（不及物動詞）
dod.dered,dod.der.ing,dod.ders
To shake or tremble, as from old age; totter.
老態(tài)龍鐘：因年老而顫抖；蹣跚而行
To progress in a feeble, unsteady manner.
腳步蹣跚：顫巍巍地行進(jìn)

來源：
Alteration of Middle English daderen
中古英語 daderen的變化

【引伸】
dod.derer
n.（名詞）

---------------另--------------
dodder
dodder 2

n.（名詞）
Any of various leafless, annual parasitic herbs of the genusCuscuta that lack chlorophyll and have slender, twining, yellow or reddish stems and small whitish flowers.
菟絲子，菟絲子屬植物：一年生無葉寄生草本植物菟絲子屬 ，缺少葉綠素，有細(xì)長蜷曲黃色或淺紅色莖，開白色小花

來源：
Middle English doder
中古英語 doder
possibly from Middle Dutch [yolk of an egg (from the yellow color of the blossom of one species of this plant)]
可能源自 中古荷蘭語 [蛋黃（由這類植物中的一種所開黃花得名）]