Senses
牙子 serrated edge
A serrated edge, a protruding rim, or a decorative carved border on objects like furniture or eaves
牙子 middleman
(archaic) A middleman, broker, or agent who facilitates trades for a commission
牙子 expert
A person who is highly knowledgeable about a particular field, such as antiques or jade
牙子 young animal
(archaic) A newborn or very young animal, such as a piglet or lamb