Answer:

wonk

Answer	Crossword Clue
WONK	Single-minded student
WONK	Policy expert
WONK	All-work, no-play student

WONK	Overstudious sort
WONK	Maven of minutiae
WONK	Student who studies too much
WONK	Bookworm, in slang
WONK	Policy pro
WONK	Eggheady expert
WONK	Overstudious one
WONK	Policy expert, slangily

WONK	Nerd
WONK	Grind
WONK	A grind: Slang
WONK	Quite the bookworm
WONK	Bookish sort, slangily
WONK	Policy ...
WONK	Policy guru
WONK	A policy expert, say

WONK	Policy maven
WONK	Policy ..

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.