A check inside? (Abbr.), 4 letters
A check, one might hope: Abbr., 4 letters
Abbr. at the bottom of a business letter, 4 letters
Abbr. at the bottom of a letter, 4 letters
Abbr. on a business letter, 4 letters
Abbr. on a business letter, perhaps, 4 letters
Abbr. on an envelope, 4 letters
Abbreviation on some letters, 4 letters
Bottom-of-letter abbr., 4 letters
Business letter abbr., 4 letters
Check inside?: Abbr., 4 letters
Check sent with a ltr., e.g., 4 letters
Check within, say?: Abbr., 4 letters
Check, perhaps: Abbr., 4 letters
Cover letter accompanier: Abbr., 4 letters
Env. in an env., e.g., 4 letters
Env. inside an env., e.g., 4 letters
It's inside an env., 4 letters
Item that accompanies a business letter: Abbr., 4 letters
Lesotho, to South Africa, 4 letters
Letter accompanier: Abbr., 4 letters
Letter add-on (Abbr.), 4 letters
Letter add-on, abbrev., 4 letters
Letter-bottom abbr., 4 letters
Letter-bottom letters, 4 letters
Letter-ending abbr., 4 letters
Like an SASE, often, 4 letters
Package content: Abbr., 4 letters
Placed inside a pkg., e.g., 4 letters
Return envelope, e.g.: Abbr., 4 letters
S.A.S.E., e.g.: Abbr., 4 letters
Something in an env., 4 letters
Something sent with a ltr., 4 letters
Unsolicited MS., perhaps, 4 letters
Completely clothed, archaically, 6 letters
In ordinary language, 7 letters
Area within an area, 7 letters
Buick crossover SUV, 7 letters
Ethnic area, perhaps, 7 letters
Group within a group, 7 letters
Isolated ethnic community, 7 letters
Isolated, surrounded area, 7 letters
Place surrounded by foreign territory, 7 letters
San Marino or Vatican City, for example, 7 letters
Surrounded territory, 7 letters
Territory within a foreign country, 7 letters
Vatican City is one, 7 letters
Vatican City, for one, 7 letters
Vatican City, to Rome, e.g., 7 letters
Chinatown and Little Italy, 8 letters
Diplomatic compounds, 8 letters
Vatican City and Chinatown, 8 letters
Completely surround, 7 letters
Include in the envelope, 7 letters
Place in an envelope, 7 letters
Put in the envelope, 7 letters
Put in, as with a letter, 7 letters
Stuff into an envelope, 7 letters
Surround completely, 7 letters
Bugs Bunny's mailing instructions, 13 letters
Like a packing list, 8 letters
Placed in an envelope, 8 letters
Start of a letter accompanying a manuscript, 8 letters
Puts a fence around, 8 letters
Puts in the envelope, 8 letters
Artifact consisting of a space that has been enclosed for some purpose, 9 letters
The act of enclosing something inside something else, 9 letters
A naturally enclosed space, 9 letters
Provide with threads, 8 letters
Bottom-of-letter abbr., 5 letters
Bus. cards in commercial mailings, e.g., 5 letters
Cover ltr. accompaniers, 5 letters
Docs. sent with the letter, 5 letters
Env. contents besides letters, 5 letters