Answer:

rare

Answer	Crossword Clue
RARE	Half-baked?
RARE	Word with earth or bird
RARE	Happening once in a blue moon

RARE	Unusual
RARE	Hardly to be had
RARE	Numismatic classification
RARE	Like snow leopards and Siberian tigers
RARE	Hard to find
RARE	Like shark attacks
RARE	Like royal flushes
RARE	Pink or close to it

RARE	Like a blue moon
RARE	Like blue moons
RARE	Few and far between
RARE	Steakhouse specification
RARE	Like albino alligators
RARE	Like signatures of William Shakespeare
RARE	Still red in the middle
RARE	Scarce

RARE	Steak order
RARE	Like black sheep
RARE	Hard to get hold of
RARE	Like white panthers
RARE	Like albinism
RARE	Like walk-off touchdowns
RARE	Atypical
RARE	Like tritium and triplets

RARE	Like N.F.L. games ending in a tie
RARE	Like Inverted Jenny postage stamps
RARE	Not medium or well done
RARE	Like black rhinos
RARE	Steak specification
RARE	Still quite red
RARE	Tag in some dictionary definitions
RARE	Like a 1913 Liberty Head nickel

RARE	Steak request
RARE	Like triple plays
RARE	Like years evenly divisible by four that are not leap years
RARE	... bird
RARE	Numismatist's classification