יֵשׁ

yesh (yaysh) subv.
1. entity
2. used adverbially or as a copula for the substantive verb (H1961)
3. there is or are (or any other form of the verb to be, as may suit the connection)
[perhaps from an unused root meaning to stand out, or exist]
KJV: (there) are, (he, it, shall, there, there may, there shall, there should) be, thou do, had, hast, (which) hath, (I, shalt, that) have, (he, it, there) is, substance, it (there) was, (there) were, ye will, thou wilt, wouldest. 
See also: H1961

• Part of speech: substantive
• Occurrences: 138

• Genesis 18:24

From Strong's Hebrew and Chaldee Dictionary (1890), which is public domain. This bundle carries the words that spell biblical names and the roots they are built from; the full lexicon of 8,674 entries ships as a bulk table.