How do you pronounce 背光?

Q: How do you pronounce 背光? A: bui3 gwong1, e.g.

背光 (bui3 gwong1) — meaning, pronunciation, examples

背光 (bui3 gwong1, bèi guāng) — to have direct light blocked; to face away from the light source; (electronics) backlight

背手影 (bui3 sau2 jing2) — to be in poor light; to do something with one's back to the light; to stand in …
背手 (bui3 sau2) — hands behind one's back; items of bribery
背時 (bui6 si4) — Unlucky; be out of luck; behind the times
背泳 (bui3 wing6) — backstroke
背脊骨 (bui3 zek3 gwat1) — spine; backbone
背脢 (bui3 mui4) — back