Wiktionary
smth
abbr. (context internet slang English) something
Wikipedia
SMTH
SMTH may refer to:
- Tsinghua University, a university located in Beijing with specialism in engineering disciplines
- SMTH BBS, an influential bulletin board system in China hosted by Tsinghua University
- SMTH, a term used in British railway signal engineering referring to the Signal Maintenance Testing Handbook, a document maintained by Network Rail
- something, an Internet slang term which originated on Bulletin Board Systems