Noun tongan has 2 senses

• tongan(n = noun.person) Array - a Polynesian native or inhabitant of Tonga; Array
is a member of friendly islands, kingdom of tonga, tonga
is a kind of polynesian

• tongan(n = noun.communication) Array - the Polynesian language spoken by the Tongan people; Array
is a kind of malayo-polynesian, polynesian

Adjective tongan has 1 sense

• tongan(a = adj.pert) Array - of or relating to the island monarchy of Tonga or its people; "Tongan beaches"
Derived form noun tonga₁