ἅψος
From LSJ
πολλὰ μεταξὺ πέλει κύλικος καὶ χείλεος ἄκρου → there is many a slip twixt cup and lip, there's many a slip twixt cup and lip, there's many a slip 'twixt cup and lip, there's many a slip twixt the cup and the lip, there's many a slip 'twixt the cup and the lip
English (LSJ)
εος, τό, (ἅπτω)
A juncture, joint, λύθεν δέ οἱ ἅψεα πάντα all his joints were relaxed [by sleep], Od.4.794, cf. Nic.Al.541; ἅψεα δεσμοῦ Opp.H.3.538: in pl., limbs, AP5.217 (Agath.), al.