(military) To make use of a hedgehog barricade as a defensive maneuver. / To array with spiky projections like the quills of a hedgehog. / (transitive, intransitive) To curl up into a defensive ball.

The fruit of the Osage orange tree (Maclura pomifera), also known as the hedge tree.

One who makes or mends hedges. / One who hedges, for example in betting.

plural of hedgehog

Third-person singular simple present indicative form of hedgehog

(biochemistry, sometimes capitalized) A morphogenic protein that controls cell division of adult stem cells and has been implicated in the development of some cancers.

a row of closely planted bushes or trees forming a hedge

plural of hedgerow

(military) A static antitank and anti-landing craft obstacle, widely used during World War II, constructed from three mutually-perpendicular steel rails connected in the form of a tripod.

(intransitive) Of an aircraft: to fly very close to the ground, such that evasive manoeuvres need to be taken to avoid obstacles.