A phrase consisting of a preposition and noun serving to express the relationship of that noun to another element in the clause rather than a simple case inflection (as foot of a crow rather than crow's foot).
Origin
Late 19th century.
Definition of case phrase in US English:
case phrase
noun
Grammar
A phrase consisting of a preposition and noun serving to express the relationship of that noun to another element in the clause rather than a simple case inflection (as foot of a crow rather than crow's foot).