Definition from Wiktionary, the free dictionary
melon; claw; gourd; squash
(surname); field; farm (a surname); plumunder; second (of two parts); next (week, etc.); lower; below; underneath; down(wards); to decline; to go down; latter simp. and trad.
瓜 田 李 下
Literally: in a melon patch or under a plum tree.
- a position that invites suspicion; liable to lay oneself open to suspicion; be found in a suspicious position; in suspicious circumstances or surroundings