How do you pronounce 咕?

Q: How do you pronounce 咕? A: gu2, e.g.

咕 (gu2) — meaning, pronunciation, examples

咕 (gu2, gū) — (onom.) for the sound of a bird, an empty stomach etc, rumble; to mumble; to mutter; to murmur

咕咕 (gu1 gu1) — inflexible; little boy's genital
咕咕聲 (gu4 gu2 seng1) — the rumbling sound of the stomach when a person is feeling hungry
咕咕雀 (gu4 gu1 zoek2) — cuckoo
咕哩 (gu1 lei5) — unskilled labour; coolie
咕喱 (gu1 lei1) — a coolie
咕𠱸 (gu1 seon2) — cushion (loanword) [colloquial]