Answer:

expo

AnswerCrossword Clue
EXPO1969 expansion player
EXPO1967 Montreal event
EXPOMontreal player
EXPOMontreal baseballer
EXPOFair
EXPOShow at a convention center
EXPOBig fair
EXPOTrade show
EXPOWorld's Fair
EXPOMontreal athlete
EXPOBig show
EXPOWorld's fair
EXPOGadgetry showcase, maybe
EXPO'67 Montreal fair
EXPOReally big show
EXPOConvention center event
EXPOFair-sized fair
EXPOSignificant showing
EXPO.. 67: Montreal fair
EXPOInternational show
EXPO.. 67: Montreal World's Fair
EXPONational, before moving
EXPOFairly large fair
EXPOFormer Montreal player
EXPO'67 Montreal event
EXPOEnd of many convention names
EXPOWorld's Fair word
EXPOWorld fair
EXPOMontreal ballplayer
EXPOWorld's Fair, for one
EXPOCanadian baseballer
EXPOFair, for short
EXPOBig showcase
EXPOIndustry showcase
EXPOOlympic Stadium player
EXPOFormer National
EXPOMajor showcase
EXPOTrade show, e.g.
EXPOBig fair, for short
EXPOFormer Montreal ballplayer