The no-computers tag is there only to prevent database dictionary searches. Other computer uses are fine.
Below is an ascii version of the image above, for those who cannot view images. All words are 8 characters long.
···················· ···············1···· ·2·········1_______· ·_········3····_···· ·_····4·2_______·5·· ·_····_···_····_·_·· ·3_______·4_______·· ·_····_···_····_·_·· ·_·6·5__7___8··_·_·· ·_·_··_·_·_·_····_·· ···_··_·_·_·_····_·· ···_··_·_···_·9··_·· ···_···6_______····· ···_····_···_·_····· ···_····_···_·_····· ·7_______···_·_····· ··············_····· ··············_····· ········8_______···· ····················
My first was a delicacy long ago.
My middle improves our quality of life.
My last can be divided or doubled.
Together, I'm in some of the healthiest foods.
My first is a protective action. [British]
My middle is the object of learning.
My last meant lunge, long ago.
Together, I'm an herb fed to animals.
My first is used for steering.
My middle is just knowledge.
My last is as expected, when true to itself.
Together, parents do this to their young children.
My first can come from a well.
My middle describes a well.
My last is smaller.
Together, I'm unresponsive to your screams.
My first is a light collector.
My middle is rounded, tight, and thick.
My last is what you do to rubber.
Together, I'm a plant sickness.
My first makes things easy to talk about.
My middle is the earth's military haircut.
My last is popular, and made from grass seed.
Together, don't confuse me with another.
My first takes care of you, if good.
My middle is a dateless partier.
My last is done by a vintner.
Together, we're an unwilling group.
My first describes the candy no one ate.
My middle is The Great Prince of the Forest.
My last describes a seasoned veteran.
Together, I'm something we did to the play.
My first converts a photo to binary.
My middle is a forced payment, when possible.
My last is weak at 2 lb., but strong at 30+ lb.
Together, I'm more deficient than anyone else.
My first can be a portal to another world.
My middle is slimy and tasty.
My last is on a buck.
Together, I'm a primitive database.
My first can be under, caught, or fed.
My middle is a second chance, for example.
My last helps you walk.
Together, we facilitate oxygen transfer.
My first is often followed by the word up.
My middle has nothing to hide.
My last are sometimes split or loose.
Together, I lean a certain direction.
My first is a friend to salt and water.
My middle is bad when it's in the back.
My last can get the job done, for sure.
Together, moisture weakens me.
My first is large in many different ways.
My middle is a very giving sequence.
My last is a wet point.
Together, I'm in a tremendous state.
My first can be opened, played with, and held.
My middle can be brought up and sat on.
My last are narrow annexes.
Together, we override strength.
My first is one of Santa's creations.
My middle usually hurts its object.
My last sounds like a dangerous animal.
Together, I describe food items you ran out of.
My first is constructed with a mouth.
My middle is anyone's guess.
My last was murdered (maybe out of jealousy).
Together, I can be put in a subgroup.