köken: From Middle Welsh petheunos, from Proto-Brythonic *pɨmθeβ̃noɨθ (with loss of /m/ by dissimilation from /β̃/ and with attraction to nos (“night”)), from Proto-Celtic *kʷinkʷe-de(k)m noxtes (literally “fifteen nights”).
köken: From Old Irish cóicthiges, apparently a compound of cóic (“five”) and deich (“ten”); compare Welsh pythefnos (“fortnight”, literally “fifteen nights”) and Breton pemzektez (“fortnight”, literally “fifteen days”). Cognate with Manx kegeesh.
aile: coicíseán, coicísiúil
ȷ imə šē kaikīš ō hin.
Do bhí coighcíos acu i dteannta a chéile go cómpórdach, ach aon tráthnóna amháin ghaibh an captaen amach, agus Máire le n-a chois.
İzlandacafjórtán dagar, hálfur mánuður, tvær vikur