Barley, Oats
Noun
むぎ
わたしは、麦アレルギーがあります。
I have a wheat allergy.
大麦と小麦のちがいは何ですか。
What's the difference between barley and wheat?
「スクワット、スクワット、スクワット、麦とスクワット♪」屈伸をしながら彼は歌った。
"Squats, squats, squats, squats, oats and squats," he sang while squatting.
The kanji and the word are exactly the same. That means they share meanings as well.
Since this word is made up of a single kanji that uses the kun'yomi reading which is the reading you learned with the kanji.