itch

名词 itch:

1. a contagious skin infection caused by the itch mite; characterized by persistent itching and skin irritation
   同义词：scabies
2. a strong restless desire
   同义词：urge
3. an irritating cutaneous sensation that produces a desire to scratch
   同义词：itchiness, itching

动词 itch:

1. scrape or rub as if to relieve itching
   同义词：rub, scratch
2. have or perceive an itch
3. have a strong desire or urge to do something
   同义词：spoil

1. His fingers itch for a fray.
   他的手指发痒，想要打架。
2. He has an itch for money.
   他渴望发财。
3. Are your mosquito bites still itching?
   你被蚊子咬的地方还在痒吗？
4. The boys were itching for the lesson to end.
   那些男孩子们渴望下课。

itch

n.（名词）
An irritating skin sensation causing a desire to scratch.
痒：让人想去搔的一种烦人的皮肤感觉
Any of various skin disorders, such as scabies, marked by intense irritation and itching.
疥癣，皮癣：一种皮肤病，如疥疮，其症状是特别的烦躁和发痒
A restless desire or craving for something:
渴望，热望，欲望：无休止的欲望和想要得到某物：
例句：
an itch to travel.
渴望旅行

v.（动词）
itched,itch.ing,itch.es
v.intr.（不及物动词）

To feel, have, or produce an itch.
发痒：感到痒、使人发痒或发痒
To have a desire to scratch.
抓痒：想要抓挠
To have a persistent, restless craving.
渴望：有持久的、永不停止的渴望
v.tr.（及物动词）
To cause to itch.
使发痒
To scratch (an itch).
抓痒：去搔（身上的痒处）

来源：
Middle English yicche
中古英语 yicche
from Old English gicce
源自 古英语 gicce
from giccan [to itch]
源自 giccan [搔痒]