trefoil
Architectural triple loop
A trefoil is a three-lobed shape or a plant with three-part leaves, like clover.
The term appears in architecture for ornamental designs with three rounded lobes, common in Gothic windows and stonework.
In heraldry, trefoils appear on coats of arms.
The shape suggests luck through its association with shamrocks and four-leaf clovers.
Three-leafed Irish emblem
- cloverThree-leafed legume plant
- legumePod-producing plant family
- alfalfaForage crop legume
- leafletSingle-sheet printed handout
pasture · meadow · forage · nitrogen-fixing · perennial · herbaceous · groundcover · wildflower
Three-leafed Irish emblem
- CelticOf Irish-Welsh descent
- GaelicCeltic linguistic tradition
- EireIsland nation's native name
- IrelandNorth Atlantic island republic
St. Patrick · Dublin · leprechaun · lucky · emblem · national symbol · green · March
Three-leafed Irish emblem
- badgeWorn symbol of membership
- insigniaDistinguishing mark of rank
- crestHighest point or tuft
- emblemRepresentational sign or device
shield · coat of arms · charge · blazon · device · symbol · Irish · clan
Decorative branching stonework
- ornamentThing that beautifies
- windowGlass-fitted wall opening
- quatrefoilFour-lobed ornamental pattern
- cinquefoilFive-lobed plant or motif
cusped · arch · molding · relief · boss · capital · cathedral · medieval
Worn symbol of membership
- Girl ScoutsAmerican youth organization for girls
- promiseCommitment to act
- emblemRepresentational sign or device
- pinPointed metal fastener
Tied rope fastening
- shapeExternal outline of something
- symmetryInvariance under transformation
- curveSmooth, angleless line
- loopCurve closing on itself
Celtic knot · interlaced · topology · mathematical · pattern · form · figure · outline
Extra-lobed clover variant
- charmAttractive personal quality
- luckyFavored by chance
- fortuneWealth or destiny
- rareSeldom found or seen
superstition · amulet · talisman · omen · serendipity · auspicious · good luck · finder
Having three parts
- symbolicRepresenting through signs
- tripleGroup of three
- tripartiteConsisting of three parts
- ChristianAdherent of the gospel
theological · triune · unity · spiritual
shamrock
Three-leafed Irish emblem
leaflet · pasture · meadow · forage · nitrogen-fixing · perennial · herbaceous · groundcover · wildflower · white clover
shamrock
Three-leafed Irish emblem
Ireland · St. Patrick · Dublin · leprechaun · lucky · emblem · national symbol · green · March · patron saint
shamrock
Three-leafed Irish emblem
emblem · shield · coat of arms · charge · blazon · device · symbol · Irish · clan · motto
tracery
Decorative branching stonework
- ornamentThing that beautifies
- windowGlass-fitted wall opening
- quatrefoilFour-lobed ornamental pattern
cinquefoil · cusped · arch · molding · relief · boss · capital · cathedral · medieval · decorative
badge
Worn symbol of membership
- Girl ScoutsAmerican youth organization for girls
- promiseCommitment to act
- emblemRepresentational sign or device
pin · membership · uniform · patch · symbol · logo · troop · rank
knot
Tied rope fastening
- shapeExternal outline of something
- symmetryInvariance under transformation
- curveSmooth, angleless line
loop · Celtic knot · interlaced · topology · mathematical · pattern · form · figure · outline · contour
four-leaf
Extra-lobed clover variant
rare · superstition · amulet · talisman · omen · serendipity · auspicious · good luck · finder
threefold
Having three parts
- symbolicRepresenting through signs
- tripleGroup of three
- tripartiteConsisting of three parts
Christian · theological · triune · unity · spiritual
trefoilquatrefoil
Four-lobed ornamental pattern
cinquefoil · simple leaf · pinnate · palmate