Across :1 : A platform built out from the shore into the water and supported by piles; provides access to ships and boats (4)
3 : A chamber within which piston moves (8)
9 : The warmest season of the year; in the northern hemisphere it extends from the summer solstice to the autumnal equinox (plural) (7)
10 : An upward slope or grade (as in aroad) (5)
11 : A parent of your father or mother (12)
14 : Take in food (3)
16 : Any division of quantity accepted as a standard of measurement or exchange (plural) (5)
17 : Become or make darker (3)
18 : Take the place of or be parallel or equivalent to (12)
21 : A metric unit of capacity equal to the volume of 1 kilogram of pure water at 4 degrees centigrade and 760 mm of mercury (or approximately 1.76 pints) (5)
22 : A wicked or evil person; someone who does evil deliberately (7)
23 : A cloth covering for a wound or sore (8)
24 : A circular segment of a curve (4)
Down :
1 : Be of different opinions (8)
2 : A punctuation mark used to indicate the separation of elements within the grammatical structure of a sentence (5)
4 : An affirmative (3)
5 : Advancing in amount or intensity (12)
6 : Wander from a direct course or at random (7)
7 : Any loose flowing garment (4)
8 : The office that serves as the administrative centre of an enterprise (12)
12 : Any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt (5)
13 : Form a mental image of something that is not present or that is not the case (8)
15 : A building where theatrical performances or motion-picture shows can be presented (7)
19 : A visual representation (5)
20 : Run away quickly (4)
22 : A truck with an enclosed cargo space (3)
