1. Godan verb with 'ru' ending, Transitive verb

   to finger; to play with; to fiddle with; to toy with

   Usually written using kana alone

   適材適所。あいつはコンピューターをいじくっていた方が生き生きしているよな。

2. to make changes to; to tinker with; to fiddle with; to tamper with

   Usually written using kana alone

3. to dabble in; to do as a hobby; to play around with

   Usually written using kana alone

Also written 弄る【いじくる】ijikuru