We don't have synonyms for chapstick yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are slapstick, chopstick and chap stick.
°A (single) particular East Asian eating utensil, used in pairs and held in the hand, the utensil is a stick, usually made of wood, of approximately 23cm (~10") in length.
°A (single) particular East Asian eating utensil, used in pairs and held in the hand, the utensil is a stick, usually made of wood, of approximately 23cm (~10") in length.