noun
tanka magazine
A periodical publication dedicated to tanka poetry, often featuring works by members of a poetry society.
See also: 短歌
彼女は毎月、歌誌に短歌を投稿している。
She submits tanka poems to a tanka magazine every month.
短歌 is the poetry form itself, while 歌誌 is a magazine that publishes such poems.
Compound of 歌 (ka, 'poem, song') and 誌 (shi, 'magazine, journal').