名詞 gad:

1. an anxiety disorder characterized by chronic free-floating anxiety and such symptoms as tension or sweating or trembling of lightheadedness or irritability etc that has lasted for more than six months
   同義詞：generalized anxiety disorder, anxiety reaction
2. a sharp prod fixed to a rider's heel and used to urge a horse onward
   同義詞：spur

動詞 gad:

1. wander aimlessly in search of pleasure
   同義詞：gallivant, jazz around

1. While they gad about the world, their children are neglected at home.
   他們在世界各地游蕩，孩子在家無人照看。
2. He spent a few months gadding about Europe before his exams.
   考試前，他在歐洲漫游了幾個月。

gad

v.intr.（不及物動詞）
gad.ded,gad.ding,gads
To move about restlessly and with little purpose.See Synonyms at wander
閑逛：無目的地不停歇地到處游蕩參見 wander

來源：
Middle English gadden [to hurry]
中古英語 gadden [趕緊，匆忙]

【引伸】
gad.der
n.（名詞）

---------------另--------------
gad
gad 2

n.（名詞）
A pointed tool, such as a spike or chisel, used for breaking rock or ore.
鋼楔：一種如尖鐵或鑿子等有尖的，用于劈裂巖石或砂石的工具
A goad, as for prodding cattle.
刺棒：趕牲畜用的尖頭棒
v.tr.（及物動詞）
gad.ded,gad.ding,gads
To break up (ore, for example) with a gad.
用鋼楔劈裂（如礦石等）

來源：
Middle English
中古英語
from Old Norse gaddr
源自 古斯堪的納維亞語 gaddr