The small knub on the door made it difficult to open.
hard knub
Frequency:
60
%
The hard knub on the table was uncomfortable to rest my hand on.
round knub
Frequency:
45
%
The round knub on the drawer was easy to grip.
metallic knub
Frequency:
30
%
The metallic knub on the cabinet was cold to the touch.
Idiomatic Expressions for knub
Phrase: knub of the problem
Meaning: the core or root cause of an issue or difficulty
Usage: Before we can come up with a solution, we must identify the knub of the problem that is causing the delays in production.