Where does “lançar mão” come from?

lançar mão (Portuguese) comes from Portuguese mão, from Old Portuguese mão, from Latin malus, from Ancient Greek μηλέα, from Ancient Greek μῆλον, from Proto-Indo-European (s)meh₁l- — small animal”; small animal.

lançar mão (Portuguese): to embrace, to adopt, to make use of

Definitions

to embrace, to adopt, to make use of

Ancestry of “lançar mão”, step by step

lançar mão traces back through two separate lines of ancestry.

via Portuguese mão

Step	Language	Word	Meaning
1	Portuguese	mão	hand
2	Old Portuguese	mão	hand
3	Latin	malus	unpleasant, distressing, painful, nasty, bad;...
4	Ancient Greek	μηλέα	apple tree
5	Ancient Greek	μῆλον	apple; any fruit from a tree; a woman's breast
6	Proto-Indo-European	(s)meh₁l-	small animal”; small animal

via Portuguese lançar

Step	Language	Word	Meaning
1	Portuguese	lançar	to launch; to throw or shoot
2	Old Portuguese	lançar	to throw
3	Latin	lanceāre	—
4	Latin	lancea	the Roman auxiliaries' short javelin; a light...
5	Proto-Indo-European	pleh₂k-	to beat, strike; to strike, fast; to beat, hit,...

Every word from Proto-Indo-European (s)meh₁l- →Every word from Ancient Greek μῆλον →Every word from Ancient Greek μηλέα →