堅實 — meaning in English

jiān shí

English meaning

solid adjective Firm and stable in structure; not liquid or gas.
solidus noun Various coins or units of money used in medieval and early modern times.

堅實 is used for these senses in English:

solid (of an object or substance) That can be picked up or held, having a texture, and usually firm. Unlike a liquid, gas or plasma.
solid (chemistry) A substance in the fundamental state of matter that retains its size and shape without need of a container (as opposed to a liquid or gas).
solidus (historical) The weight of the Roman gold coin, 1/60 of a Roman pound under Diocletian or 1/72 lb. (about 4.5 grams) after Constantine.

adjective Firm and stable in structure; not liquid or gas.
adjective Reliable, dependable, or of good quality.
noun A substance that holds its shape and volume without a container, unlike a liquid or gas.

noun Various coins or units of money used in medieval and early modern times.
noun A Roman gold coin of about 23 carats, brought in under Diocletian in AD 301 under this name, then reissued at a somewhat reduced weight by Constantine I.
noun The Byzantine coin that replaced it, which lost weight and purity gradually from the eleventh century onwards.
noun Another word for sol or sou, a unit of account used under the Carolingians equal to a solidus of silver.