"lobby" in the noun sense
1. anteroom, antechamber, entrance hall, hall, foyer, lobby, vestibule
a large entrance or reception room or area
2. lobby
the people who support some common cause or business or principle or sectional interest
3. special interest, special-interest group, special interest group, advocacy group, lobby group, lobby, pressure group, third house
an interest group that tries to influence legislators or bureaucrats to act in their favor, typically through lobbying
"lobby" in the verb sense
1. lobby, buttonhole
detain in conversation by or as if by holding on to the outer garments of as for political or economic favors
Source: WordNet® (An amazing lexical database of English)
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