fer·rule /ˈfɛrəl/
金屬手杖等的,金屬環,套圈(vt.)裝以金屬鐵
ferrule
套接管
Fer·rule n. [Sometimes spelled ferule.]
1. A ring or cap of metal put round a cane, tool, handle, or other similar object, to strengthen it, or prevent splitting and wearing.
3. Hence: Steam Boilers A bushing for expanding the end of a flue to fasten it tightly in the tube plate, or for partly filling up its mouth.
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ferrule
n : a metal cap or band placed on a wooden pole to prevent
splitting [syn: collet]