מַ֘הֵ֤ר עֲנֵ֨נִי ׀ יְהוָה֮ כָּלְתָ֪ה ר֫וּחִ֥י אַל־תַּסְתֵּ֣ר פָּנֶ֣יךָ מִמֶּ֑נִּי וְ֝נִמְשַׁ֗לְתִּי עִם־יֹ֥רְדֵי בֽוֹר׃
Rashi on Psalms
my spirit pines If one longs and does not attain, it is called the pining of the eyes and the pining of the spirit.