The most common and most likely answer to this crossword clue is the 7 letter word SNORKEL
I've seen this crossword clue in The Daily Telegraph
S
N
O
R
K
E
L
More clues leading to the result SNORKEL
- Cause to lose sleep about king having left dive
- To inhale endless seaweed mostly provides source of inspiration at sea
- Swimmer’s aid — something to help one see coming up round Orkney — not half
- Thousand attending tedious event left in tube
- Tube in which energy is applied to tin, gold and potassium by lecturer
- Sound asleep, embracing Kelvin, having left dive?
- Wild elk’s holding neither breathing device
Buddy explains!
The straight part
We know that "Swimmer’s aid" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case swimmer’s aid = snorkel.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 SNORKEL mean?
SNORKEL noun- A hollow tube, held in the mouth, or mounted on and opening into a diving mask, used by swimmers for breathing underwater.
- A retractable tube fitted in diesel-engine submarines to allow sufficient ventilation that the engines may be used at periscope depth.
- To use a snorkel.