What is the meaning of úr?

out of

from

off

in expressions

master (someone who has control over something or someone)

Lord

gentleman

(on its own, with a first-person possessive suffix) sir, gentleman (term of address)

Mr, Mr. (or omitted in English)

husband

clock

watch

out of

from

fresh; new

free, liberal

moist

anything fresh or new

letter U in Ogham alphabet:

Alternative form of iúr (yew)

Alternative form of bhur (your pl)

drizzle, spray

name of the rune (u)

Source: wiktionary.org