To Mourn For, To Hold A Memorial Service For, To Condole
transitive verb, godan verb
This word consists of kanji with hiragana attached. Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means condolence, so the verb version is to mourn for or to condole.
とむらう
Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You haven't learned this reading yet, so here's a mnemonic to help you: You seem to mourn for things you really care about. Well then you would mourn for your toe mural (とむら). You had a mural made for your favorite toe so if anything were to happen to it, you would want to mourn for it.
ここには、殉職者の魂を弔う石碑が建てられています。
We’re building a stone memorial for the souls of soldiers who died in battle.