A small quantity or a small amount (of something physical, like ingredients or materials).
この薬は少量ずつ服用してください。
Take this medicine in small amounts (in small doses).
少量の塩で味を調える。
Season with a small amount of salt.
サンプルは少量しか残っていない。
Only a small amount of the sample remains.
A figurative sense meaning narrow-mindedness or lack of generosity; this use is limited or somewhat dated (often written 小量).
彼の小量さが職場の雰囲気を悪くしている。
His narrow-mindedness is souring the workplace atmosphere.