uk / paɪn / us / paɪn / (also pine away) to be sad and upset for a long time, especially after the death of a loved person: His owner left, and the dog just pined.

Pining definition: suffering with or expressing longing or yearning for someone or something. See examples of PINING used in a sentence.

pine2 (pīn), v., pined, pin•ing, n. v.i. to yearn deeply; suffer with longing; long painfully (often fol. by for): to pine for one's home and family. to fail gradually in health or vitality from grief, regret, or longing (often fol. by away): Separated by their families, the lovers pined away.

1 : to lose vigor, health, or flesh (as through grief) : languish 2 : to yearn intensely and persistently especially for something unattainable they still pined for their lost wealth