touch on

verb

1. 1

   have an effect upon

   Will the new rules affect me?

2. 2

   restore by replacing a part or putting together what is torn or broken

   She repaired her TV set

   Repair my shoes please

3. 3

   refer to or discuss briefly

4. 4

   be relevant to

   There were lots of questions referring to her talk

   My remark pertained to your earlier comments