Ancient generals often used iron whips as weapons.
Tips
usage
鞭 appears in many compounds: 鞭炮 (biānpào, firecracker), 鞭策 (biāncè, to spur on), 马鞭 (mǎbiān, horsewhip). As food, 牛鞭 (niúbiān) refers to bull penis, considered a delicacy.
Leather on the left names the material a whip is made from: a stretched, tanned hide. It heads the leather-goods family alongside 鞋 shoe, 鞍 saddle and 靴 boot — all everyday objects fashioned from cured hide.
Lends the sound, with a slight shift from biàn to biān. The convenience meaning is irrelevant; 便 is recruited only for the rhyme. It links 鞭 phonetically to characters like 编 weave and 蝙 bat that share the same stem.