ɪn ɑːɹtˈɪlɚɹi, kˈæpskwɛɹz, ɔːɹ kˈæpskwaɪɚz, ɑːɹ stɹˈɔŋ plˈeɪts ʌv ˈaɪɚn wˌɪtʃ kˈʌm ˌoʊvɚ ðə tɹˈʌniənz əvə kˈænən, kˈiːpɪŋ ɪɾ ɪn ɪts kˈæɹɪdʒ.
In artillery, capsquares, or capsquires, are strong plates of iron which come over the trunnions of a cannon, keeping it in its carriage.