The most common and most likely answer to this crossword clue is the 8 letter word LISTENER
L
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S
T
E
N
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R
More clues leading to the result LISTENER
- Short step boarding ship, one paying attention
- Re-enlist eccentric fan of radio show
- . As ear might be described in barred puzzle?
- Person in audience to record Frenchman backing
- One of the audience let siren off
- Sort of gun in story by right bugger?
- Singular audience for an extra difficult crossword
- Person attending medical pioneer touring north-east
- Eavesdropper abandoned silent queen
- Learner’s entries being corrected, he pays attention
Buddy explains!

The straight part
We know that "I pick up" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case i pick up = listener.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does LISTENER mean?
LISTENER noun- Someone who listens, especially to a speech or a broadcast.
- (chiefly Java) A function that runs in response to an event; an event handler.
- A person's ear.