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ply

1 ply /ˈplaɪ/ verb
plies; plied; plying
1 ply
/ˈplaɪ/
verb
plies; plied; plying
Britannica Dictionary definition of PLY
formal
[+ object]
: to work at (a job, activity, etc.)
old-fashioned : to use (something, such as a tool) with care and skill
always followed by an adverb or preposition, of a bus, ship, airplane, etc. : to go along the same route regularly : to travel on a particular road, way, etc., regularly
[no object]
[+ object]

ply for hire/business/trade

British
: to try to get customers or business

ply with

[phrasal verb]
ply (someone) with (something)
: to offer or give (something) to (someone) repeatedly or constantly
2 ply /ˈplaɪ/ noun
plural plies
2 ply
/ˈplaɪ/
noun
plural plies
Britannica Dictionary definition of PLY
[count]
: one of the layers, folds, or strands that make something (such as yarn or plywood) usually used in combination