Oxford Dictionary 4 -

“A free and independent fourth estate is essential to democracy.”

So the next time you write the numeral 4 or spell out f-o-u-r , pause for a moment. You are not just counting. You are tapping into centuries of human expression—from ancient cardinal points to modern courtrooms. oxford dictionary 4

“What is said within these four walls stays here.” “A free and independent fourth estate is essential

Supporting one’s body on hands and knees. “The toddler crawled on all fours.” oxford dictionary 4

Used to indicate privacy, confidentiality, or the intimate space of one’s own home or a specific room.