I've never really been sure what to call this.

when you were younger,everyone always was out in the street with each other playing until it was time to go inn,ages wasn't a big deal when i was younger i was around 10-11 and this guy was 14/15 i'm not sure,somehow it ended up being just me and him everyone else was going home,me and this guy (call him Gary),we ended up at the back of all the houses where no one could see us,he took me up there and asked me to do stuff i didn't want to do,i was young and really easy to blackmail and he said he would tell on me,bad things would happen if i didn't do what he said,so i did what he said and he took my wrist and made me touch him,he touched me as well obviously places he shouldn't be touching,i told my mum two years ago cause it really fucked me up and it made me put myself down and i attempted suicide but i couldn't bring myself to do it.I don't know how to label the incident,any suggestions?🙁