The Collaborative International Dictionary of English v.0.48:
Pigeonfoot \Pi"geon*foot`\, n. (Bot.) The dove's-foot geranium (Geranium molle). [1913 Webster]WordNet (r) 3.0 (2006):
Geranium molle n 1: western geranium with small pink flowers; a common weed on lawns and in vacant lots [syn: dove's foot geranium, Geranium molle]