"to descend or convey by or as if by the aid of a parachute," 1807, from parachute (n.). Marked "rare" in Century Dictionary (1895); it became more common 20c. Related: Parachuted; parachuting.
1650s, "to work with aid of a dial or compass; measure with or as with a dial," from dial (n.). Sense of "rotate the dial plate of a telephone to indicate the number to which a connection is to be established" is from 1921. Related: Dialed; dialing.
c. 1200, rekenere, "one who keeps accounts or computes," agent noun from reckon (v.). Later especially "an aid in reckoning, something that assists a person to reckon accounts;" especially "book of tables used in calculation," often known as a ready reckoner (1757).