A pregnant pause/silence British American slang
A pregnant pause is a comic timing technique used to accentuate a comedy element, where the comic pauses to build up suspense at the end of a sentence. It's often used to build up a comeback at the end of a comically awkward statement or in the silence after a seemingly non-comic phrase. The pregnant pause, refined by Jack Benny, has become a staple of stand-up comedy.
A pause/silence in which everyone waits or listens for something, or a moment of silence which is full of meaning.
There was a pregnant pause while she was telling everyone about her life.
During his speech, he stopped many times due to pregnant pauses.
Used to describe a situation when people say nothing and feel worried, embarrassed or uncomfortable
Not sound, or a spoken word from someone
Used to advise people that sometimes it is better to not say anything
It is a metaphor. In that they are filled with meaning, as a pregnant body is filled with the offspring to be born, some pauses resemble literal pregnancies; and they are forward-looking, that is, they have the listener waiting for the next utterance, in something of the same way that a pregnancy carries the forthcoming birth. The Oxford English Dictionary gives examples beginning in the 15th century of the word "pregnant" used with the sense of "full of meaning".
A person or thing that is popular or favoured
Justin Bieber is a hot ticket.