ambulacrum: translation
n.; pl. -lacra [L. ambulare, to walk]
1. (ARTHROPODA: Chelicerata)
The adhesive disc of hooks that terminate the tarsus of ticks.
2. (ARTHROPODA: Insecta)
The walking leg.
3. (ECHINODERMATA)
Plates with pores forming the test, arranged in 5 or more rows, where the podia of the water-vascular system project to the exterior.