pregnant

Etymology 1

From Middle English preignant, from Old French preignant, pregnant, also prenant (compare archaic Modern French prégnant), and their source, Latin praegnāns (“pregnant”), probably from prae- (“pre-”) + *gnāscī, an archaic form of nāscī (“to be born”). Displaced Old English bearnēacen (literally "child-enlarged").

adj

1. (chiefly not comparable) Carrying developing offspring within the body.
   Once upon a time, not so long ago, women got pregnant and spent nine months in suspense before finding out if they were having a boy or a girl. But today? That waiting game is completely outdated, even quaint. July 13 2017, Bonnie Rochman, “Mothers-To-Be Aren’t Told Enough About Genetic Testing”, in Time
   I went to the doctor and, guess what, I’m pregnant!
   1. Of a couple: expecting a baby together.
      We are pregnant.
2. (comparable) Having numerous possibilities or implications; full of promise; abounding in ability, resources, etc.
   a pregnant pause
   The many tear-jerkers deal with finality, with death and the end of love, with a stoicism pregnant with feeling. 26 January 2019, Kitty Empire [pseudonym], “The Streets review – the agony and ecstasy of a great everyman”, in Katharine Viner, editor, The Guardian, London: Guardian News & Media, →ISSN, →OCLC, archived from the original on 2019-04-08
3. (poetic) Fertile, prolific (usually of soil, ground, etc.).
4. (obsolete) Affording entrance; receptive; yielding; willing; open; prompt.
5. (obsolete) Ready-witted; clever; ingenious.

noun

1. A pregnant woman.
   The Entbundenen, or those already delivered, are separate from those pregnants awaiting their accouchement 1843, William Robert Wilde, Austria: Its Literary, Scientific, and Medical Institutions

Etymology 2

Apparently from Middle French pregnant, preignant (“pressing, compelling”), present participle of prembre (“to press”), from Latin premere (“to press”).

adj

1. (now rare) Compelling; clear, evident.