The mesh object used for collision detection.

	// Assigns an arbitrary mesh collider to the current transform
	var meshToCollide : Mesh;
	
	if(!meshToCollide) {
		Debug.LogError("Assign a mesh in the inspector");
		return;
	}
	transform.gameObject.AddComponent(MeshCollider);
	transform.GetComponent(MeshCollider).sharedMesh = meshToCollide;

using UnityEngine;
using System.Collections;

public class Example : MonoBehaviour {
    public Mesh meshToCollide;
    void Example() {
        if (!meshToCollide) {
            Debug.LogError("Assign a mesh in the inspector");
            return;
        }
        transform.gameObject.AddComponent<MeshCollider>();
        transform.GetComponent<MeshCollider>().sharedMesh = meshToCollide;
    }
}

import UnityEngine
import System.Collections

public class Example(MonoBehaviour):

	public meshToCollide as Mesh

	def Example() as void:
		if not meshToCollide:
			Debug.LogError('Assign a mesh in the inspector')
			return
		transform.gameObject.AddComponent[of MeshCollider]()
		transform.GetComponent[of MeshCollider]().sharedMesh = meshToCollide