名詞 resin:

1. any of a class of solid or semisolid viscous substances obtained either as exudations from certain plants or prepared by polymerization of simple molecules
   同義詞：rosin

1. Amber is the resin of pine trees that grew very very long ago.
   琥珀是古老的松脂。
2. A plastic made from such resin.
   三聚氰氨樹脂三聚氰胺樹脂制得的塑料
3. This shelf was made of synthetic resin.
   這個架子是合成樹脂做的。
4. Coated with wax or resin.
   涂蠟的，涂樹脂的
5. The basin is made of synthetic resin.
   這個盆是用合成樹脂做的。

res.in

n.（名詞）
Any of numerous clear to translucent yellow or brown, solid or semisolid, viscous substances of plant origin, such as copal, rosin, and amber, used principally in lacquers, varnishes, inks, adhesives, synthetic plastics, and pharmaceuticals.
樹脂：一種源于植物的透明的黃色或棕色的固態(tài)或半固態(tài)的黏性物質，比如珂瑪脂、松脂以及琥珀等，主要用于制漆、清漆、墨水、粘合劑、合成塑料以及藥品
Any of numerous physically similar polymerized synthetics or chemically modified natural resins including thermoplastic materials such as polyvinyl, polystyrene, and polyethylene and thermosetting materials such as polyesters, epoxies, and silicones that are used with fillers, stabilizers, pigments, and other components to form plastics.
合成樹脂：一種物質構成相似的聚合纖維或化學成分改變了的天然樹脂的統(tǒng)稱，包括有諸如聚乙烯基、聚苯乙烯和聚乙烯等的熱塑性材料以及諸如聚脂、環(huán)氧樹脂和硅等及與摻入物、穩(wěn)定劑、色素以及其他組分一起使用以及形成塑料的熱固性材料
v.tr.（及物動詞）
res.ined,res.in.ing,res.ines
To treat or rub with resin.
用樹處理；涂擦樹脂于

來源：
Middle English
中古英語
from Old French resine
源自 古法語 resine
from Latin rôsona
源自 拉丁語 rôsona
from Greek dialectal *rhôsina
源自 希臘方言 *rhôsina
variant of Greek rhôtinô
希臘語 rhôtinô的變體

【引伸】
res.inous