Schoolmaster's rod

• Hickory stick
• Old-school rapper whose hits wouldn't stand today?
• Schoolmarm's discipline dispenser
• Schoolmaster's stick
• The hickory stick
• A switch (a stick or cane or flat paddle) used to punish children

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
"rod or flat piece of wood for punishing children," 1590s, earlier "giant fennel" (early 15c.), from Middle English ferula "fennel plant" (late 14c.), from Latin ferula "reed, whip, rod, staff; fennel plant or stalk" (fennel stalks were used for administering ...

WordNet Word definitions in WordNet
n. a switch (a stick or cane or flat paddle) used to punish children

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Ferrule \Fer"rule\ (f[e^]r"r[i^]l or f[e^]r"r[.u]l; 277), n. [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. ...