n. 大堂；（美）游说集团（lobby的复数形式）

Lobby \Lob"by\, n.; pl. {Lobbies}. [LL. lobium, lobia, laubia, a
covered portico fit for walking, fr. OHG. louba, G. laube,
arbor. See {Lodge}.]
1. (Arch.) A passage or hall of communication, especially
when large enough to serve also as a waiting room. It
differs from an antechamber in that a lobby communicates
between several rooms, an antechamber to one only; but
this distinction is not carefully preserved.

2. That part of a hall of legislation not appropriated to the
official use of the assembly; hence, the persons,
collectively, who frequent such a place to transact
business with the legislators; hence: any persons, not
members of a legislative body, who strive to influence its
proceedings by personal agency; a group of lobbyists for a
particular cause; as, the drug industry lobby. [U. S.]
[1913 Webster +PJC]

3. (Naut.) An apartment or passageway in the fore part of an
old-fashioned cabin under the quarter-deck.

4. (Agric.) A confined place for cattle, formed by hedges.
trees, or other fencing, near the farmyard.

{Lobby member}, a lobbyist. [Humorous cant, U. S.]