Answer:

acr

Answer	Crossword Clue
ACR	Cruciverbalist's dir.
ACR	Puzzler's dir.
ACR	Spanning (abbr.)

ACR	From l. to r.
ACR	Height (comb. form)
ACR	Height (prefix)
ACR	Like this ans.
ACR	Horiz.
ACR	Like hor. answers
ACR	Opp. of down
ACR	Spanning: Abbr.

ACR	Unlike this ans.
ACR	Like hor. puzzle answers
ACR	Crossword heading: Abbr.
ACR	Prefix meaning "height" (var.)
ACR	Not down (abbr.)
ACR	From left to right (abbr.)
ACR	Crossworder's direction (abbr.)
ACR	Crossword clue category (abbr.)

ACR	Hor.
ACR	Dir. of this entry
ACR	NATO or CARE, e.g.
ACR	Not down: Abbr.
ACR	"Height" starter
ACR	Word form for "height"
ACR	Pertaining to heights: Comb. form.
ACR	Peak: Prefix.

ACR	Top: Prefix.
ACR	Summit: Prefix.
ACR	Tip: Prefix.
ACR	Height: Prefix.
ACR	Summit: Abbr.
ACR	Height: Prefix
ACR	Summit: Prefix
ACR	Peak: Prefix

ACR	Top: Comb. form
ACR	Summit: Comb. form
ACR	Peak: Comb. form
ACR	Tip: Comb. form
ACR	From left to right: Abbr.