Entry 3 senses · 3 variants Webster, 1913 hoya · IPA n. n. n. 01 n. any plant of the genus Hoya having fleshy leaves and usually nectariferous flowers. 1. any plant of the genus Hoya having fleshy leaves and usually nectariferous flowers. 02 n. any plant of the genus Hoya having fleshy leaves and usually nectariferous flowers. 1. any plant of the genus Hoya having fleshy leaves and usually nectariferous flowers. 03 n. Any plant of the genus Hoya having fleshy leaves and usually nectariferous flowers. 1. Any plant of the genus Hoya having fleshy leaves and usually nectariferous flowers.