Definitions:
solid, firm, and rigid; not easily broken, bent, or pierced

done with a great deal of force or strength

requiring a great deal of endurance or effort

(of information) reliable, especially because based on something true or substantiated

strongly alcoholic; denoting a spirit rather than beer or wine.

(of water) containing relatively high concentrations of dissolved calcium and magnesium salts, which make lathering difficult

(of the penis, clitoris, or nipples) erect.

(of a consonant) pronounced as a velar plosive (as c in cat, g in go).

with a great deal of effort

so as to be solid or firm

to the fullest extent possible

a road leading down across a foreshore.