sippy cup

[ sip-ee ]
/ ˈsɪp i /

noun

a spill-resistant drinking cup for toddlers, having a tight lid with a spout.

Origin of sippy cup

First recorded in 1985–90; sip + -y1

British Dictionary definitions for sippy cup

sippy cup

noun

US and Canadian a plastic cup for young children which has a tight-fitting lid with a perforated spout