WEARING THIN
Credit: Joseph Appel - after a puzzle by Jeff Chen

Consider the following grid:

B R E  S T
A O R T A
B L O U S  E
Y E S D  S T R E E T (confirm part of an address)
                   E

How many across and down entries do you count?

Apparent answer: 10 (4 across and 6 down)

Correct answer: 16 - Why?

HINTS: 
1. The title is a hint.
2. The title applies to BLOUSE.  
3. Think of BLOUSE as a see-through blouse.

Answer:

If you "see through" BLOUSE, you can eliminate those letters and find 6 more down entries - 2 words and 4 abbreviations:

B  R  E  S T
A  O R  T A
Y  E  S  D S T
                     E

BAY, ROE, ERS* - emergency rooms, STD, TAS (teaching assistants), TE (teacher's edition)

*ERS can also be words you say when you can't find the right words to say.