artillery
US /ɑːrˈtɪl.ɚ.i/
UK /ɑːrˈtɪl.ɚ.i/

1.
large-caliber guns used in warfare on land
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The artillery barrage lasted for hours.
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They moved their heavy artillery into position.
2.
a branch of an army that uses large-caliber guns
:
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He served in the artillery during the war.
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The artillery unit was deployed to the front lines.