|Suggested Meaning:||‘sluggish stream at the white fallow land’|
|1st element:||white + Scots lay ‘fallow land‘|
|2nd element:||Scots sike, syke ‘sluggish stream’|
|Blaeu Coila (1654):||No Entry|
|OS Name Books (1855-57):||No Entry|
Although Whitelaysyke is not named on the Ordnance Survey Map nor in the Ordnance Survey Map Name Book it can be asssumed it is the syke that is crossed by the Whitellaysyke Bridge.
A small section of the syke can be seen on the aerial photo of the layby and the former transport cafe
Herbert Maxwell in The Place-Names of Galloway’ identifies Whiteleys, Wigtownshire as ‘white fields, lea land’ and relates to other place-names of the forms – Whitefield, Whitehill, Whitehills and Whiteyards.
The first element of the name Whitelay, i.e. white- refers to the colour of the grass in field while the second element i.e.– lay is Scots lea, ley, lay ‘ground which has been left fallow for some time and is covered by natural grass’ . A specific Ayrshire example of the use of the form -lay is given –
Ayr. 1793 W. Fullarton Agric. Ayr. 25:Dictionaries of the Scots Language
Of all the rotations hitherto discovered, the best for Ayrshire appears to be from lay, oats or beans.
A Sike or Syke is described as –
A small stream, rill or water-course, especially one that meanders through a hollow or across flat or boggy ground and is freqently dry in summerDictionary of the Scots Language 
the sheughs and the sykes
| Sir Herbert Maxwell ‘The Place-Names of Galloway’|
| Dictionaries of the Scots Language |lea, ley, lay|
| Dictionaries of the Scots Language |syke, sike|
| The Laird of Logan, Or, Anecdotes and Tales Illustrative of the Wit and Humour of Scotland|