Answer:

bat

Answer	Crossword Clue
BAT	Carlsbad Caverns dweller
BAT	Red Sox article
BAT	Be up

BAT	Flying mammal
BAT	Night flier
BAT	Nocturnal flying mammal
BAT	Fenway Park club?
BAT	Fledermaus
BAT	Slugger's best agent?
BAT	Animal symbol that strikes fear into some fictional criminals (a superstitious, cowardly lot)
BAT	Yaz's weapon

BAT	Cave dweller
BAT	Inverted snoozer
BAT	McGwire prop
BAT	Sosa's weapon
BAT	Swing at home
BAT	Beltran's blaster
BAT	Bruce Wayne's inspiration
BAT	Club for Casey

BAT	Dracula, at times
BAT	Club for Utley
BAT	Cudgel
BAT	Club for a diamond
BAT	Diamond club
BAT	"Chiroptera" member
BAT	Take your swings
BAT	Winged mammal

BAT	Only mammal capable of true flight
BAT	Ball club?
BAT	Cricket necessity
BAT	"Casey at the ..."
BAT	Come to the plate
BAT	Cricket club
BAT	Belfry occupant?
BAT	Blink

BAT	Club for swingers
BAT	Face the pitcher
BAT	Lumber on the diamond
BAT	Slugger?
BAT	Sosa swings one