A History of Short Words

From the New York Times Crossword Puzzle

ERG

Mon, 26 Sep '22
Unit of work
Sat, 9 Jul '22
Indoor rowing machine, in brief
Sun, 6 Mar '22
Rowing machine, informally
Fri, 14 Jan '22
Bit of work
Tue, 29 Jun '21
Part of a joule
Sat, 2 Jan '21
Bit of work