Sentence:  "WIRL", "sb." Sc. Yks. ... A small and harsh-featured person; an ill-grown child; a stunted animal. ... Hence (1) "Wirly", "adj." puny, small; (2) "Wirly-bit", "sb." a short time; a little way; a small portion. (1) Sc. There's nae a pilchard in my creel, Nor <WSD>wurlie</WSD> sprat … They're firm and fat (Jam.). 
Meaning of the word marked with <WSD> tags:  Of an object: derisorily small, tiny; of a person: puny, stunted.