baby's tears
noun, plural in form but singular or plural in construction
variants or less commonly baby tears
: a prostrate or creeping sparsely hairy Corsican herb (Soleirolia soleirolii synonym Helxine soleirolii) of the family Urticaceae often grown especially as a house plant for its mosslike small round short-stalked leaves
Word History
First Known Use
1930, in the meaning defined above