Instagram

Short definition from Wiktionary

Proper noun

1. 1
   An online photo- and video-sharing social networking service, originally designed to mimic old-fashioned instant cameras.

Noun

1. 1
   A user's profile or account on this service.
2. 2
   A photograph or video shared on this service.

Verb

1. 1
   To use the social networking service Instagram.
2. 2
   To post an image or video to Instagram.
3. 3
   To digitally manipulate a photograph using filter effects.