stal·ac·titeBrE/ˈstæləktaɪt/NAmE/stəˈlæktaɪt/nounalongpointedpieceofrockhangingdownfromtheroofofacave, formed over a long period of time as water containing lime(= ahollowplaceunderground), formedoveralongperiodoftimeaswatercontaininglimerunsofftheroof钟乳石(向下悬垂)