(bound form) water caltrop (Trapa species)
Mitsubishi (Japanese conglomerate)
water caltrop (Trapa species), aquatic plant with edible seeds
antique bronze mirror with flower petal edging, most commonly from the Tang dynasty
1.magnesite2.magnesium ore
(military) caltrop (spiky metal device laid on the ground to create a hazard for enemy horses or troops in ancient times)
rhombus of Michaelis (anatomy)