Entry 1 sense Webster, 1913 Acequia /(ä*sā"kē̇*ȧ; Sp. ä*thā"kē̇*ä)/ · A·ce·qui·a · IPA /əˈseɪkɪə/ 01 n. A canal or trench for irrigating land. 1. A canal or trench for irrigating land.[Sp. Amer.]