- either of two fittings on the end of a section of a sectional fishing rod, one fitting serving as a plug and the other as a socket for fastening the sections together.
- one of two or more small rings spaced along the top of a casting rod to hold and guide the line.
verb (used with object), fer·ruled, fer·rul·ing.
Origin of ferrule
Word Origin for ferrule
"metal cap on a rod," 1610s, ferule, earlier verrel (early 15c.), from Old French virelle, from Latin viriola "bracelet," diminutive of viriae "bracelets," from a Gaulish word (cf. Old Irish fiar "bent, crooked"); spelling influenced by Latin ferrum "iron."