名詞 lobby:

1. a large entrance or reception room or area
   同義詞：anteroom, antechamber, entrance hall, hall, foyer, vestibule
2. the people who support some common cause or business or principle or sectional interest
3. a group of people who try actively to influence legislation
   同義詞：pressure group, third house

動詞 lobby:

1. detain in conversation by or as if by holding on to the outer garments of; as for political or economic favors
   同義詞：buttonhole

1. The film star held court in the hotel lobby.
   這位電影明星在旅館的大廳里接見了影迷。
2. A lobby or an anteroom, as of a theater or hotel.
   休息室，候客室如戲院或旅館的休息室或接待室
3. I waited for her in the lobby of theatre yesterday.
   昨天我在戲院的大廳等她。
4. The anti-nuclear lobby is becoming stronger.
   向議員游說的反核群眾聲勢漸強。

lob.by

n.（名詞）
【復數(shù)】 lob.bies
A hall, foyer, or waiting room at or near the entrance to a building, such as a hotel or theater.
門廳：靠接旅館或劇院等建筑入口處的大廳、門廳或休息室
A public room next to the assembly chamber of a legislative body.
休息室：立法機構集會大廳邊上的公共活動室
A group of persons engaged in trying to influence legislators or other public officials in favor of a specific cause:
游說團：為了某特定目標而努力影響立法者或其他官員的一群人：
例句：
the banking lobby; the labor lobby.
銀行游說團；勞工游說團

v.（動詞）
lob.bied,lob.by.ing,lob.bies
v.intr.（不及物動詞）
To try to influence the thinking of legislators or other public officials for or against a specific cause:
游說：為了支持或抵制某項特定目標而努力影響立法者或其他官員的想法：
例句：
lobbying for stronger environmental safeguards; lobbied against the proliferation of nuclear arms.
為加強環(huán)境保護而游說；反對核武器擴散而游說

v.tr.（及物動詞）
To try to influence public officials on behalf of or against (proposed legislation, for example):
游說：為支持或反對…（如立法提案）而試圖影響官員：
例句：
lobbied the bill through Congress; lobbied the bill to a negative vote.
游說國會通過提案；游說否決提案

To try to influence (an official) to take a desired action.
陳情：試圖努力影響（官員）采取有利行動

來源：
Medieval Latin lobia [monastic cloister]
中世紀拉丁語 lobia [修道院]
[of Germanic origin]
[源于日耳曼語]

【引伸】
lob.byer 或
lob.byist
n.（名詞）
lob.byism
n.（名詞）