Godan verb with 'ru' ending, Intransitive verb
to well up (of tears, anger, joy, etc.); to surge up (within oneself); to rise; to fill one's heart; to overcome one
non-standard form of 込み上げるsee 込み上げる
久しぶりに故郷に帰ると、懐かしい気持ちが込み上がる。Returning to your hometown after a long time fills you with nostalgia.
Also written 込みあがる【こみあがる】、こみ上がる【こみあがる】