plural of 2-4-4-2

plural of 0-4-4-0

plural of 0-4-4-2

(CB slang) affirmative. / Message received, understood, acknowledged

(curling) The 4-foot diameter circle in the house / (rail transport) Alternative form of four foot

(law) Alternative spelling of four L

(physics) The normal isotope of helium, ⁴₂He, that has two neutrons

plural of 4-H'er

A participant in 4-H.

In the United States, a youth organization administered by the Cooperative Extension System of the United States Department of Agriculture with the mission of "engaging youth to reach their fullest potential while advancing the field of youth development."