a touch of (something)

a touch of (something)

1. A small amount of something. She had a touch of grey in her hair, but otherwise you would never guess that she was nearly 60. There was a touch of hesitation in his voice. I'll just have a touch of wine with my meal, thanks.
2. A mild case of something (i.e., some illness or ailment). A: "Are you all right? You sound quite ill." B: "I'm fine, just a touch of bronchitis." It's just such a shame that she came down with a touch of the flu during her vacation.
See also: of, touch
Farlex Dictionary of Idioms.

touch of something

 
1. a mild case of some illness. I have a touch of the flu and need some more bed rest.
2. a little bit of something, particularly a small helping of food or drink. A: How about some more? What do you need? B: I'll have just a touch of that meatloaf if there's enough to go around.
See also: of, touch
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • a mystery to (one)
  • appear to
  • able to do
  • able to do it
  • a change of heart
  • (one) can whistle for it
  • a turn of phrase
  • a shoulder to cry on
  • a piece of the action
  • a piece/slice of the action