The most common and most likely answer to this crossword clue is the 10 letter word COMPLEMENT
I've seen this crossword clue in The Daily Telegraph
C
O
M
P
L
E
M
E
N
T
Buddy explains!
The straight part
We know that "members of crew" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case members of crew = complement.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 COMPLEMENT mean?
COMPLEMENT noun- A protective substance that exists in the serum or other bodily fluid and is capable of killing microorganisms; complement.
- Something (or someone) that completes; the consummation.
- The act of completing something, or the fact of being complete; completion, completeness, fulfilment.
- The totality, the full amount or number which completes something.
- Something which completes one's equipment, dress etc.; an accessory.
- The whole working force of a vessel.
- Fullness (of the moon).
- An angle which, together with a given angle, makes a right angle.
- Something which completes, something which combines with something else to make up a complete whole; loosely, something perceived to be a harmonious or desirable partner or addition.
- (grammar) A word or group of words that completes a grammatical construction in the predicate and that describes or is identified with the subject or object.
- An interval which, together with the given interval, makes an octave.
- The color which, when mixed with the given color, gives black (for mixing pigments) or white (for mixing light).
- Given two sets, the set containing one set's elements that are not members of the other set (whether a relative complement or an absolute complement).
- One of several blood proteins that work with antibodies during an immune response.
- An expression related to some other expression such that it is true under the same conditions that make other false, and vice versa.
- A voltage level with the opposite logical sense to the given one.
- A bit with the opposite value to the given one; the logical complement of a number.
- The diminished radix complement of a number; the nines' complement of a decimal number; the ones' complement of a binary number.
- The radix complement of a number; the two's complement of a binary number.
- The numeric complement of a number.
- A nucleotide sequence in which each base is replaced by the complementary base of the given sequence: adenine (A) by thymine (T) or uracil (U), cytosine (C) by guanine (G), and vice versa.
- Old spelling of compliment
- To complete, to bring to perfection, to make whole.
- To provide what the partner lacks and lack what the partner provides, thus forming part of a whole.
- To change a voltage, number, color, etc. to its complement.
- Old form of compliment
- A good whose appeal increases with the popularity of its complement