Sol. is the abbreviation for solutions, meaning it is "short" for answers.
To get crossword puzzle answers you look at the numbered clues and find out what they mean and what matchs the clue then you put your answer to the clue in its numbered space
The clue is related to the crossword title
jib
"Perps" is short for perpendiculars - or answers that cross other answers so that you can get the fill even if you didn't know the answer.
In most crosswords, a gp in lowercase in a clue means group.
"clue echo" for crossword aficianados, wherein one clue is repeated later in the puzzle.
hug, cuddle
Pref means a prefix, so "tetrad prefix" might be "quad."
Had a hard time figuring this out. It means spew! It was a crossword puzzle clue.
It usually means an abbreviation and indicates that the answer wants to be abbreviated as well.
That was the author's name: Noel Coward
ISRAEL middle east(ME) country