FERRULE
ferrule, collet
(noun) a metal cap or band placed on a wooden pole to prevent splitting
Source: WordNet® 3.1
Etymology
Noun
ferrule (plural ferrules)
A band or cap (usually metal) placed around a shaft to reinforce it or to prevent splitting. [from early 17th c.]
(specifically, climbing) The metal spike at the end of the shaft of an ice axe.
A band holding parts of an object together.
A bushing for securing a pipe joint.
A metal sleeve placed inside a gutter at the top.
(billiards) The plastic band attaching the tip to the cue.
(painting) The pinched metal band which holds the bristles of a paintbrush to the shaft.
Verb
ferrule (third-person singular simple present ferrules, present participle ferruling, simple past and past participle ferruled)
(transitive) To equip with a ferrule.
Notes
Source: Wiktionary
Fer"rule ( or ; 277), n. Etym: [Formerly verrel, F. virole, fr. L.
viriola little bracelet, dim. of viriae, pl., bracelets; prob. akin
to viere to twist, weave, and E. withe. The spelling with f is due to
confusion with L. ferrum iron.]
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.
2. (Steam Boilers)
Definition: A bushing for expanding the end of a flue to fasten it tightly
in the tube plate, or for partly filling up its mouth.
Source: Webster’s Unabridged Dictionary 1913 Edition