Answer:

TWO

Answer	Crossword Clue
TWO	Enough to tango
TWO	Safety's value in the NFL
TWO	Tango need

TWO	Company quorum
TWO	One and one
TWO	More than one
TWO	Rarely-seen bill
TWO	Tango requirement
TWO	Phone's ABC
TWO	"Terrible" age
TWO	Number worn by Moses Malone and Derek Jeter

TWO	Relatively lonely number, though not as bad as one, in song
TWO	Company?
TWO	Deuce
TWO	Noah's number
TWO	Bottom of a deck?
TWO	Seesaw quorum
TWO	Teeter-totter quorum
TWO	Company's number?

TWO	Jefferson's bill
TWO	Tango requisite
TWO	Blue pool ball
TWO	A couple
TWO	Tally for a safety
TWO	"Duck," in poker slang
TWO	Smallest prime
TWO	Tango quota

TWO	Slam-dunk score
TWO	Company quorum?
TWO	Marriage requirement
TWO	Pair
TWO	... -timer
TWO	Couple
TWO	Seesaw requirement
TWO	Ticket booth request, often

TWO	What a "V" sign might mean
TWO	Word with time or piece
TWO	Company, so they say
TWO	Binary base
TWO	Romantic number