All my dictionaries give numerous definitions for the words 'pin' and 'pinned,' but neither of the following and I'm wondering why.

pin (verb), slang, meaning 'to see or watch.' Often used (mostly by young people) in the 1950s and later, as in "Let's pin the flicks" = "Let's go to the movies/go to to see a film."

pinned (adjective). Said of eyes whose pupils are exceedingly contracted, i.e. unusually small, especially in reference to the eyes of heroin users who are high, when the occurrence is common. "With pinned eyes like those, he's got to be on smack."

Some drugs cause the pupils of the eyes to become constricted, which is sometimes called "pinpoint" pupils.So "pinned" might have arisen from this.

pin (verb), slang, meaning 'to see or watch.'

I understood it to mean "to see" in the sense of the date exclusively; "going steady". Lyrics from Bye, Bye Birdie, the musical and film from that period:

-Have you heard about Hugo and Kim?
Did they really get pinned?
Did she kiss him and cry?
Did he pin the pin on?
Or was he too shy?
Well, I heard they got pinned
-Yeah! Yeah!
I was hopin' they would!
- Oho!
Now they're livin' at last,
Goin' steady for good!

http://makeashorterlink.com/?U4A142A8

Welcome aBoard, Eddie! Interesting usages - but I can't say I've ever heard either. Could they be UK-specific? "Pinned" meaning going steady is around the same time frame as your "pin the flicks" reference. I assume the drug usage is current? Maybe it hasn't caught on here yet. Not that I would have any way of knowing such things....

Wow! Eddie, good question... I'm not familiar with either of those uses, but p'raps it's different in the colonies. I'm afraid I can't offer much more than my esteemed friends here but I do have to say this:

WELCOME Eddie

Since you're a writer, I hope you'll enjoy the word interaction here. Maybe you'll even find some inspiration. There's plenty of people with stories, eh W'ON & GallantTed...

Hev