a. 大而重的, 厚实的, 有质量的, 实心的, 大而浓密的

Massy \Mass"y\, a. [Compar. {Massier}; superl. {Massiest}.]
Compacted into, or consisting of, a mass; having bulk and
weight or substance; ponderous; bulky and heavy; weighty;
heavy; as, a massy shield; a massy rock.

Your swords are now too massy for your strengths,
And will not be uplifted. --Shak.

Yawning rocks in massy fragments fly. --Pope.