Small – el pequeño / la pequeña
(Pronounced pe-kay-nee-oh or pe-kay-nee-ah)
To remember that small is pronounced pe-kay-nee-oh or pe-kay-nee-ah (pequeño/pequeña) in Spanish, use the following mnemonic:
It was only a small bird - but its peck caused a pain in my knee - 'Oh!' (pequeno)

Examples of pequeño/pequeña (small) in a sentence
Mi pequeño perro duerme en la cama.
(My small dog sleeps on the bed.)
La casa es muy pequeña para una familia grande.
(The house is very small for a large family.)
Vivo en un apartamento pequeño pero cómodo.
(I live in a small but comfortable apartment.)