holster[
'hәulstә]
n. 
枪

套
holster[ noun ]- a sheath (usually leather) for carrying a handgun
<noun.artifact>
- a belt with loops or slots for carrying small hand tools
<noun.artifact>

Holster \Hol"ster\, n. [D. holster; skin to AS. heolstor den,
cave, fr. helan to conceal, and to Icel. hulstr case, Goth.
hulistr covering, veil, huljan to cover. [root]17. See {Hele}
to cover, {Hell}, and cf. {Housing}, {Houss}.]
A leather case for a pistol, carried by a horseman at the bow
of his saddle, or worn on the person suspended from a belt or
shoulder strap.
[1913 Webster +PJC]