stingy
悋 centers on a heart or mind that holds back: being stingy, reluctant to give, or begrudging.
悋 combines the heart radical 忄 with 吝, which likely contributes both sound and the idea of stinginess or reluctance.
The heart radical 忄 beside 吝 suggests a heart that is stingy or begrudging. Picture a closed fist over a heart, unwilling to let go.
For リン, imagine a stingy person refusing to lend even a single rin (an old Japanese coin): rin -> リン, and the heart holds back.