What is the meaning of Wee?

Small, little.

A short time or short distance.

Urine.

An act of urination.

To urinate.

obsolete emphatic of we

lack

miss

Used to form the negative of some moods and aspects.

nauseating

contraction during labour or childbirth

sorrow, sadness, pain, woe (used in interjections of despair or annoyance)

alternative spelling of we (“you, thou”)

woe!

unpleasant, painful

pain

alternative form of we (“woe”)

alternative form of wye (“man, warrior”)

with

alternative form of wough (“we”)

small, little, tiny

this

Source: wiktionary.org