O

o:

O means of.
Three pun o tatties, please.
...Whit d'ye make o that?

oatcake:

An oatcake is a thin unsweetened oatmeal biscuit, an example of the importance of oats in the traditional Scottish diet which gave rise to Dr. Johnson's definition of oats as "A grain, which in England is generally given to horses, but in Scotland supports the people".
Scottish farmhouse cheeses accompanied by oatcakes.

obligement:

An obligement is a kind, helpful act or favour.
Could you do me a wee obligement?

och (pronounced oCH):

och is an expression of surprise, contempt, annoyance, impatience, or disagreement.
Och, away ye go!
It is also used as a general preface to any remark.
Och, I think I'll away to my bed.

ochone (pronounced oCH-own):

Ochone is an expression of sorrow or regret. It is now old-fashioned and more likely to be found in stage or caricature representations of Highland English.
Ochone, ochone, whatever will come of it?
The word was originally Gaelic.

ocht (pronounced oCHt):

ocht means anything.
Ah dinnae ken ocht aboot it.
The term is a Scots form of aught.

offie (rhymes with coffee):

In the Glasgow area an offie is an off-licence.
We'll need to get a carry-out before the offies shut.

offski:

Offski is a Glaswegian slang term meaning leaving, on one's way.
Right, that's me offski.

O Grade:

O Grade or Ordinary Grade was until recently the basic level of the Scottish Certificate of Education, now largely replaced by the Standard Grade.
O grade Geography
It is also used to mean a pass in a particular subject.
She has ten O grades.

old-fashioned:

A child who is described as old-fashioned is regarded as old for their age or precocious.

Old Firm:

The Old Firm is a term used to mean Celtic and Rangers, the two main Glasgow football teams, conceived as together forming a footballing establishment.
next Saturday's Old Firm League meeting
...the Old Firm's stranglehold on Scottish football

ongoings:

Ongoings are happenings or events; goings-on.

ony (rhymes with pony):

Ony means any.
Is there ony mair?

oor:

Oor means our.
oor national gemme

oose (pronounced ooss):

Oose is dust or fluff.
Have you seen the oose under that bed?
Something dusty or covered in fluff may be described as oosy.
Oose was originally the plural of oo, a Scots work for wool.

oot:

Oot means out.
Are ye gaun oot the night?

Orange:

The term Orange is applied to anything or anyone connected with the Orangemen, a society dedicated to upholding the Protestant religion, the Protestant dynasty, and Protestant supremacy against Irish Nationalists and Roman Catholics.
the Orange Hall
The are organized in Orange Lodges
An Orange Walk is a march by Orangemen, especially occuring in West Central Scotland. The Main one is held on the Saturday nearest to the twelfth of July (the anniversary of the Battle of the Boyne).
The term refers to William of Orange, who as King William the Third, successfully resisted attempts to restore the Catholic Stuart dynasty.

Orcadian (pronounced or-kay-dee-an):

An Orcadian is a native or inhabitant of the Orkneys.
The word comes from the Latin Orcades (Orkneys).

Ordinary Degree:

In older Scottish Universities an Ordinary Degree is a degree gained by students studying courses at a lower (Ordinary) level, as opposed to courses at an Honours level.

Ordinary grade:

Ordinary grade is the full form of O grade

Orkney:

Orkney, also known as the Orkneys or the Orkney Islands, is a group of over 70 islands which lies off the North coast of Scotland and is separated from the Scottish mainland by the Pentland Firth. The islands are predominantly low-lying and treeless.

orra (pronounced or-ra or or-ree):

In Tayside and the Northeast, orra means coarse or uncouth in behaviour or speech.
When she talks like that we feel all orra and common.
On a traditional Scottish farm, an orraman, orra lad, or (in the Northeast) orra loon was a man or boy employed to do miscellaneous unskilled work.
Earlier senses of the word meant odd or occasional, and it perhaps comes from ower a' (over all, everywhere or general)

outby (pronounced out-by) or ootby (pronounced oot-by):

Outby means outlying, away from a specific place such as a house, a town, a farm, or a shore.
the outby fields
It can also mean outside, not in the house.
ootby in the summer sunshine

outsider:

In Glasgow an outsider is the first or last slice from a loaf of bread.

outwith (pronounced out-with):

Outwith means outside or beyond.
parts of Edinburgh outwith the city centre
...Alcohol would not be served outwith existing licensing hours.

ower (rhymes with power):

Ower means over.
He flung it ower the wa.
It also means over in the sense of too or excessively.
It's ower warm for a jumper.

owergyaan (pronounced our-gyahn) or owergan (pronounced our-gan):

An owergyaan is a Northeastern word meaning a scolding.
Compare the English going-over, a scolding or thrashing.

oxter:

An oxter is an armpit