ovum

testicles; penis

to lay eggs

(coll.) testicle; balls

ovary

cobble; cobblestone; pebble

(vulgar) dumbass

to freeze a woman's eggs for later fertilization; to cryopreserve oocytes

oval; ellipse

oval; egg-shaped (leaves in botany)

ootype (site of egg composition in flatworm biology)

ovarian follicle; Taiwan pr. [luan3pao4]

oviparous

cleavage of fertilized ovum into cells

(invertebrate zoology) ootheca

egg yolk

(of twins) identical; monozygotic

to hatch; to brood

(of twins) fraternal; dizygotic

to donate eggs (from one's ovaries)

to ovulate

(slang) to chicken out; to wimp out

insect egg

fish eggs; roe

oval; ellipsoidal

(anatomy) oval window (between the middle and inner ear)

(anatomy) ovarian fossa

laying hen

lecithin (phospholipid found in egg yolk)

ovaries and testes

egg cell

ovoviviparous

yolk sac (ectodermal cells attaching fetus to uterus before the development of the placenta)

vitelline duct

vitelline glands; vitellaria (in biology)

fertilized ovum

pebble

(Internet slang) ultimately useless

Fallopian tube; oviduct

pebble; cobblestone

lit. the matter has become a pile of eggs (idiom); fig. at a critical juncture

lit. to strike a stone with egg (idiom); to attempt the impossible; to invite disaster by overreaching oneself

precarious as pile of eggs (idiom); ready to fall and break at any moment; in a dangerous state

(biology) oocyte; ovocyte

(flatworm anatomy) common vitelline duct, formed by the union of vitelline ducts and entering the ootype

lit. to kill the chicken to get the eggs (idiom); fig. to kill the goose that lays the golden eggs

identical twins

fraternal twins

lit. when the nest overturns no egg remains intact; no member escapes unscathed from a family disaster (idiom)