Where does “marlpit” come from?

marlpit (English) comes from English pit, from Middle English pit, from Old English pytt, from Proto-West Germanic puti, from Latin puteus, from Latin -al — noun-forming suffix.

marlpit (English): A pit where marl has been dug

Definitions

A pit where marl has been dug

Ancestry of “marlpit”, step by step

marlpit traces back through two separate lines of ancestry.

via English pit

Step	Language	Word	Meaning
1	English	pit	A hole in the ground; An area at a racetrack used...
2	Middle English	pit	—
3	Old English	pytt	pit; well, pool; grave
4	Proto-West Germanic	puti	well
5	Latin	puteus	pit, dungeon; well; cistern
6	Latin	-al	noun-forming suffix

via English marl

Step	Language	Word	Meaning
1	English	marl	A mixed earthy substance, consisting of carbonate...
2	Middle English	marle	marl
3	Old French	marle	marl
4	Late Latin	margila	—

Every word from Latin -al →