Answer:

meeter

Answer	Crossword Clue
MEETER	Airport sign holder, e.g.
MEETER	Session participant
MEETER	Airport limo driver, say

MEETER	One shaking hands with a new acquaintance
MEETER	Tryster, e.g.
MEETER	One holding up a sign at the airport, e.g.
MEETER	More suitable.
MEETER	Welcoming one.
MEETER	More fitting.
MEETER	One waiting at the airport
MEETER	One having a tryst

MEETER	Sign-bearer in an airport, e.g.
MEETER	One holding a sign at the airport, e.g.
MEETER	Greeter's partner
MEETER	Limo driver in the airport, e.g.