bur

As a noun bur is

spring, fountain.

As nouns the difference between burst and bur

is that burst is an instance of, or the act of bursting while bur is spring, fountain.

As a verb burst

is to break from internal pressure.

As nouns the difference between bur and bru

is that bur is spring, fountain while bru is belly.

As nouns the difference between buz and bur

is that buz is obsolete form of buzz while bur is a rough, prickly husk around the seeds or fruit of some plants.

As a verb buz

is obsolete form of buzz.

As an interjection brr

is an expression used to express being cold, to show shivering.

As a noun bur is

a rough, prickly husk around the seeds or fruit of some plants.

As nouns the difference between cur and bur

is that cur is a mongrel or inferior dog while bur is a rough, prickly husk around the seeds or fruit of some plants.

As an adverb fur

is out, outside.

As a noun bur is

spring, fountain.

As nouns the difference between burd and bur

is that burd is poetic maiden, young woman while bur is spring, fountain.

As nouns the difference between bur and pur

is that bur is a rough, prickly husk around the seeds or fruit of some plants while pur is dated form of nodot=yes lang=en (low murmuring sound as of a cat.

As a verb pur is

dated form of nodot=yes lang=en.

As an initialism PUR is

polyurethane.