Hedge

The word hedge is used in three quite different contexts:

In gardening and agriculture, a hedge or hedgerow is a boundary formed by growing plants so that their limbs intertwine. This is the original meaning of the word. It may also refer to the Osage-orange tree which is a commonly called a hedge tree.
In gambling and finance, a hedge is a bet or investment taken to reduce loss if another bet or investment turns out unfavourably.
In linguistics, hedges are intentionally non-comittal or ambiguous sentence fragments, such as "sort of", "kind of", "like".