Apt word to substitute for each of four black squares to make sense of the across answers on either side of them

Question:

Answer:

BRIDGE

Length:

Similar Crossword Questions:

Word needed to be added to 12 appropriately placed answers in this puzzle for their clues to make sense
Row of black squares preceding or following six puzzle answers, thereby completing them
Angle irons graphically represented by four sets of black squares in this grid, and by letter formations starting in the four longest answers
Word to add to each theme answer that will make sense of its clue
Where GIs fought Charlie[LAST WEEK: "Lady X" was Ingrid Bergman, whose first name is revealed in the circled squares (IN + GRID). Seven of her one-word movie titles can be seen "straddling" black squa
Apt adjective for today that's needed to make sense of eight puzzle answers
Word before black
Word for turkey hidden in 11 answers of this puzzle
Word with satellite or side
Scents make sense to him
Massachusetts school ... and a description of the two-word meeting that occurs at the intersections of pairs of starred answers
Word with open or side
Word for "beginning" that encloses four answers in this puzzle
Higher pair of black squares in this grid, typographically
Word providing a hint to the hidden theme answers
"West Side Story" song, or a hoped-for response after experiencing the transition in this puzzle's word ladder
Word with ''black,'' ''red'' or ''pink''
Action hero's garb, and what each first word in this puzzle's four longest answers is
Apt starter for the first word of the longest answers
Word that can follow the starts of this puzzle's five longest answers
Word with "side" or "satellite"
Word on two "Monopoly" squares
The 2x2 black square near the middle of this puzzle's grid, e.g., which is part of eight answers
___ reason (make sense)
Word that can precede each set of circled letters, forming a literal hint for entering certain answers in this puzzle