amendment-Legal Definition. n. 1  The addition, deletion, correction, or other changes proposed or made to a document. 2  The term is usually capitalized when referring to an amendment in the United States Constitution (for example, the Fifth Amendment). 3  The act or process or revising something. 4  See also emendation.
On June 1, 1979, the NHL enacted a rule requiring the wearing of helmets for anyone entering the league after that date, though a âgrandfatherâ clause allowed diehard veterans to continue to go hatless if they wished.
The next big evolutionary leap occurred in 1939, when the first football helmet was made from plastic. While the initial design looked very similar in size and shape to the leather helmets used at the time, the plastic helmet (eventually) had several advantages over its leather counterpart: