Tiny

Nickname for someone with a tiny build.

Diminutive of names that end in -tina (such as Christina and Hubertina) and -tinus (such as Justinus and Martinus).

This name is strictly feminine in Belgium, whilst in the Netherlands it is unisex (but more often used on women than on men).

Also, Tiny is relatively rare as an official name on birth certificates: it is much more common as an informal name in daily life for people who are officially named Christina, Hubertina, Justinus, Martinus, etc. on their birth certificate.