A small mammal, of the family Erinaceidae or subfamily Erinaceinae (spiny hedgehogs, the latter characterized by their spiny back and often by the habit of rolling up into a ball when attacked.)

(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.

plural of hedgehog

Third-person singular simple present indicative form of hedgehog

present participle of hedgehog

simple past tense and past participle 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.

(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.

plural of Czech hedgehog

(archaic) sea urchin