knob

noun

ˈnäb 

1

a

: a small rounded ornament or handle

b

: a rounded protuberance : lump

2

: a rounded usually isolated hill or mountain

knobbed

ˈnäbd 

adjective

knobby

ˈnä-bē 

adjective

Synonyms of knob

• chunk
• hunk
• clump
• wad
• glob
• lump

Examples of knob in a Sentence

a carved walking stick with a silver knob

toss a knob of butter into the frying pan

Recent Examples on the Web

Your left hand gets a 7-bar pad with 14 customizable assignments, while your right hand uses a pick-style strum knob with a dynamic up-down response. — New Atlas, 21 June 2026

Just grab the knob on the line, stretch it to the opposite end, and secure it in place on the base end that has a hole with a small indentation to pop it in and out in a second. — Caley Sturgill, Southern Living, 21 June 2026

This species also has white flesh but with a yellow exterior and a pointy knob on top. — Randi Gollin, Martha Stewart, 21 June 2026

In this case, regulation can be more responsive to nuances of context, and the regulatory knobs are tunable rather than being just on/off. — Philip Ball, Quanta Magazine, 18 June 2026

Word History

Etymology

Middle English knobbe; akin to Middle Low German knubbe knob

First Known Use

15th century, in the meaning defined at sense 1b

Phrases Containing knob

• stop knob

Rhymes for knob

• blob
• bob
• cob
• daub
• fob
• glob
• gob
• hob
• job
• lob
• mob
• rob

Kids Definition

knob

noun

ˈnäb 

1

a

: a rounded lump

b

: a small rounded handle

2

: a rounded hill

knobbed

ˈnäbd 

adjective

knobby

ˈnäb-ē 

adjective

Medical Definition

knob

noun

ˈnäb 

: a rounded protuberance or lump

knobby

ˈnäb-ē 

adjective