בְּכֹרָה
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 (Strong)
or (short) bkorah; feminine of בְּכוֹר; the firstling of man or beast; abstractly primogeniture: birthright, firstborn(-ling).