Questions & Answers about כף הרגל כואבת.
Because כף הרגל is a construct phrase (called סמיכות in Hebrew).
In a construct phrase, the first noun is linked to the second noun, and the whole phrase is made definite by the second noun. So:
- כף רגל = a foot / sole of a foot
- כף הרגל = the foot / the sole of the foot
So even though כף does not have ה־, the whole expression is definite because הרגל is definite.
Literally, it means something like the sole of the leg/foot.
The word כף can mean palm or sole, depending on context:
- כף יד = palm of the hand
- כף רגל = sole of the foot / foot
So כף הרגל is the standard Hebrew expression for the foot.