The spelling of the word "sempill" might seem a bit unusual, but it actually corresponds well to the way it is pronounced in Scottish English. Using IPA phonetic transcription, we can see that the "s" is pronounced like /s/ and the "e" like /ɛ/, making the first syllable "sem". The second syllable starts with the sound of a voiced "b" /b/, followed by the vowel /ɪ/, which is spelled with two "i"s. Finally, there is a silent "l" at the end. Altogether, this gives us the pronunciation: /ˈsɛmbɪl/.