מֶרְכָּבmerkâb

chariot, riding-seat, (properly riding-place)

Pronunciation: mer-kawb' · Hebrew/Aramaic (Old Testament) · H4817

Meanings

1. chariot, (= following) (1 Kings 5:6)

2. probably saddle (Leviticus 15:9)

3. seat, of litter (Song of Solomon 3:10)

Same root

רָכַבrâkab · H7392to ride (on an animal or in a vehicle); causatively, to place upon (for riding or generally), to despatch
מֶרְכָּבָהmerkâbâh · H4818a chariot

Where it appears

Appears 3 times in the Bible.

Leviticus 15:9 Any saddle blanket on which the man rides will be ceremonially unclean.
1 Kings 4:26 Solomon had 4,000 stalls for his chariot horses, and he had 12,000 horses.
Song of Solomon 3:10 Its posts are silver, its canopy gold; its cushions are purple. It was decorated with love by the young women of Jerusalem.

Source: Brown, Driver and Briggs, Hebrew and English Lexicon of the Old Testament (1906), public domain; markup by unfoldingWord, CC BY (github.com/unfoldingWord/Brown-Driver-Briggs-Enhanced).