411 REFERENCE · Wiktionary
18+
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Etymology
From 18 being the age of majority in many countries.
Adjective
Suitable only for adults (e.g. adult content or mature audience content); mature, age of majority.
en 🔞
See also
NSFW
Adults Only