cardinal - Dictionary definition and meaning for word cardinal
'cardinal' also means pertaining to the 'heart' and the heart is the 'most important' part of our body. It is responsible for the working of our body.
car + din(day)....so car is "important" to go to the office during din
You are very important to me. TADI NAL , hum jaan de sakte hai!!!!! cardinal = most important, primary