转给 is a resultative verb compound made up of 转 (to transfer) and 给 (to give). It means 'to pass on to' or 'to forward to' someone, often when you act as an intermediary. You'll commonly see it in the 把 structure (把…转给…) or with a recipient before the direct object (转给某人某物). It's more specific than 给 or 递给 — it emphasizes that the item was transferred from somewhere or someone else.