anything that approximates the shape of a column or tower; "the test tube held a column of white powder"; "a tower of dust rose above the horizon"; "a thin pillar of smoke betrayed their campsite"柱や塔の形に近い長細いもの櫓
例:a tower of dust rose above the horizon 地平線上にほこりの塔が昇った
a powerful small boat designed to pull or push larger ships大きな船を引いたり押したりするために設計された、強力な小型ボート曳船
a structure taller than its diameter; can stand alone or be attached to a larger building直径より高い構造物高閣
appear very large or occupy a commanding position; "The huge sculpture predominates over the fountain"; "Large shadows loomed on the canyon wall"とても大きな様相で、圧倒的な位置を占有する廃船