eta meaning, definition, what is eta: the seventh letter of the Greek alphabet. Learn more.
shafts definition, shafts meaning | English dictionary. shaft. 1 the long narrow pole that forms the body of a spear, arrow, etc. 4 a rod or pole forming the handle of a hammer, axe, golf club, etc.
Definition of column for English Language Learners. : 1  a long post made of steel, stone, etc., that is used as a support in a building. : 2  a group of printed or written items (such as numbers or words) shown one under the other down a page.