to harden, to harden something (see Karttunen)
a diamond (see Molina)
steel (see Molina)
turquoise, a precious stone (see Molina)
something hard and heavy (see Molina)
something hard (see Karttunen)
a hard bean (see Karttunen)
a planted parcel; it might have olives or other plants; it might have stakes in it (Molina)