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

These grill cleaning wipes can be used on every part of the grill, including burners, buttons, knobs, and the whole outer surface. —Caley Sturgill, Southern Living, 16 May 2026

Justin Thomas had his caddie place hole-sized discs on every corner of the 17th green at Aronimink on Monday, all of them perched on knobs. —ABC News, 11 May 2026

Do twist that volume knob, though. —Jonathan M. Gitlin, ArsTechnica, 11 May 2026

While the rotary knob that surrounds the ignition button provides quick access to the various drive modes (which includes a customizable Individual mode), hard buttons for features like damper stiffness and exhaust volume allow for specific alterations to the driving experience on the fly. —Bradley Iger, Robb Report, 8 May 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