a boundary formed by a dense row of shrubs or low trees

You know you would rather dine under the hedge than with Casaubon alone — George Eliot

a means of protection or defence, e.g. an asset held as protection against financial loss

a deliberately non-committal or evasive use of language

to enclose or protect (an area) with a hedge

to limit or qualify (e.g. a statement)

a promise hedged with ifs and buts

to protect oneself against losing (e.g. an investment), esp by making counterbalancing transactions

to avoid committing oneself, esp by making evasive statements