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"bag" is also used as a crossword clue. If that's what you saw, the answer is often sack (4 letters).
Definitions
an activity that you like or at which you are superior
Word origin
Inherited from Middle English bagge, from Old Norse baggi (“bag, pack, satchel, bundle”) (whence also Old French bague (“bundle, package, sack”)); related to Old Norse bǫggr (“harm, shame; load, burden”), of uncertain origin.
Used in a sentence
“Acid House is not my bag: I prefer the more traditional styles of music.”
“And from then on, his bag was silence. Silence and killing.”
“They knew it and sometimes used it as a way to get her to glox on, which was not her usual bag.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer21 curated clues
01“Carry all”3 letters
02“Airport carry-on”3 letters
03“Airport luggage item”3 letters
04“Carryall for groceries”3 letters
05“Container for groceries”3 letters
06“Grocery carrier”3 letters
07“Grocery sack”3 letters
08“Luggage piece”3 letters
09“Sack”3 letters
10“Sack for carrying items”3 letters
11“Sack for groceries”3 letters
12“Shopping sack”3 letters
13“Shopping tote”3 letters
14“Suitcase or tote”3 letters
15“Suitcase, casually”3 letters
16“Tote”3 letters
17“Travel tote”3 letters
18“Traveler's carryall”3 letters
19“Catch”3 letters
20“Carrying sack”3 letters
21“Carryall”3 letters
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