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.
1 Shaft (civil engineering) , an underground vertical or inclined passageway. 2  Pitch (ascent/descent) , a significant underground vertical space in caving terminology. 3  Shaft mining, refers to the method of excavating a vertical or near-vertical tunnel from the top down, where there is initially no access to the bottom.