1) Rock 2) Stone 
• (a.) Caused, or characterized, by the presence of a calculus or calculi; a, a calculous disorder; affected with gravel or stone; as, a calculous person. • (a.) Of the nature of a calculus; like stone; gritty; as, a calculous concretion.
Cal'cu·lous adjective [ Latin calculosus .] 1. Of the nature of a calculus; like stone; gritty; as, a calculous concretion. Sir T. Browne. 2. Caused, or characterized, by the presence of a calculus or calculi; a, a calculous disorder; affected with gravel ...
[adj] - relating to or caused by or having a calculus or calculi
adjective relating to or caused by or having a calculus or calculi