short for Instagram : a social media service for sharing photographs and video

Insta is a fun and playful platform if you follow the right people. 如果你关注了合适的人，Instagram是一个很有趣的平台。

someone's Instagram account

She shared her new look on her insta. 她在她的Instagram账户上分享了她的新造型。

to share something such as an image using the social media service Instagram

We constantly tweet and insta.

Everyone was instaing the sunset. 大家都在Instagram上分享日落的美景。

instant (= happening immediately, without any delay)

The two insta-polls gave wins to the Democratic candidate. 两项即时民意调查显示民主党候选人获胜。

Everyone feels pressure to compete in the insta-news culture. 在即时新闻文化中，每个人都感到竞争压力。