lub
nounUK /lʌb/
US /lʌb/
A lub is a soft, gentle sound like a heart beating.
The doctor listened to the lub of the heartbeat.
OTHER MEANINGS
2. A short, dull sound made by something heavy hitting softly.
The lub of the ball hitting the floor was quiet.
3. A friendly, informal word for a loved one or sweetheart.
He called his wife his dear lub.
4. A clumsy or awkward person.
That big lub tripped over his own feet.