Green’s Dictionary of Slang

togs n.

[tog n. (1)]

1. [mid-18C+] (also toggs, togging, toggys, tuggs) clothes; often in combs., e.g. long togs, sporting togs, Sunday togs; see cite 1906 for rare sing. use.

2. [1940s+] (Aus./N.Z.) a swimming costume.