When a woman is on the wrong side of 35 and wears a low cut shirt and push up bra, the sag in the boobs creates what looks like a crow made a print at the top of the cleavage. Similar to the “crows feet” on the side of her eyes when she smiles.
An open-ended wrench head that is used on a ratchet. Crowfeet come in different sizes. They are used to loosen or tighten nuts in otherwise inaccessible places.