Noun which may take the genitive case particle 'no', Na-adjective (keiyodoshi), Noun
occasional; infrequent; rare
Usually written using kana alonesee たまに
友理子はたまの逢瀬を心行くまで楽しんでしまいました。Yuriko thoroughly enjoyed her occasional secret meetings with her lover.
Also written 適【たま】