Dream about spider on floor is a symbol for your fierceness, aggression, power and rigidity. You need to exercise care in some fragile situation. Perhaps you are being snippy about some situation. It points at people around you who are prone to violent outbursts and shifting mood swings. You need to gain a wider perspective on things.
Spider on floor dream draws attention to your issues with power and domination. You need to adapt a more healthier lifestyle. You are feeling shut out of some situation or relationship. Your dream means your desire for children or your preoccupation with having a child. You are trying to take back something you said.
If you dreamt about spider on floor:
When friction arises in the workplace, your immediate reaction may be to blame someone else. Look at yourself first before you point a finger at someone else. You are better off being the bigger person and admitting your own mistakes.