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

Citizens and private insurers may deny coverage for homes with old roofs, knob-and-tube wiring, polybutylene plumbing, and other conditions. —Allison Palmer, Miami Herald, 19 Dec. 2025

The folks at Grayl have devised a rugged heat-proof screw-together accessory that breaks down to a press knob, two-piece press rod and fine-mesh filter screen. —Simon Heptinstall december 11, New Atlas, 11 Dec. 2025

Tucked around a hallway inside a Montbello High School classroom, the knob turns and the door opens eyes to understanding and opportunities. —Troy Renck, Denver Post, 7 Dec. 2025

Ginkgo has a symmetrical upright growth habit and short shoots that terminate in knobs, adding an exotic touch to the tree’s leafless silhouette. —Joshua Siskin, Oc Register, 6 Dec. 2025

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