Definitions

1. verb

to make a dull, heavy sound, especially when something falls.

“The book thudded to the ground, making a loud thunk.”

2. noun

a dull, heavy sound, especially when something falls.

“The thunks of the hail on the roof were deafening.”

3. verb

to think deeply or carefully about something.

“She spent the afternoon thunking about her future plans.”